Incorrect buffer length handling in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux kernel through 4.15.11, and in drivers/staging/ncpfs/ncplib_kernel.c in the Linux kernel 4.16-rc through 4.16-rc6, could be exploited by malicious NCPFS servers to crash the kernel or execute code.

According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - A use-after-free vulnerability was found in DCCP socket     code affecting the Linux kernel since 2.6.16. This     vulnerability could allow an attacker to their escalate     privileges.(CVE-2017-8824i1/4%0

  - The OZWPAN driver in the Linux kernel through 4.0.5     relies on an untrusted length field during packet     parsing, which allows remote attackers to obtain     sensitive information from kernel memory or cause a     denial of service (out-of-bounds read and system crash)     via a crafted packet.(CVE-2015-4004i1/4%0

  - Integer signedness error in the MSM V4L2 video driver     for the Linux kernel 3.x, as used in Qualcomm     Innovation Center (QuIC) Android contributions for MSM     devices and other products, allows attackers to gain     privileges or cause a denial of service (array overflow     and memory corruption) via a crafted application that     triggers an msm_isp_axi_create_stream     call.(CVE-2016-2061i1/4%0

  - A denial of service flaw was found in the way the Linux     kernel's XFS file system implementation ordered     directory hashes under certain conditions. A local     attacker could use this flaw to corrupt the file system     by creating directories with colliding hash values,     potentially resulting in a system     crash.(CVE-2014-7283i1/4%0

  - It was found that the Linux kernel's ping socket     implementation did not properly handle socket unhashing     during spurious disconnects, which could lead to a     use-after-free flaw. On x86-64 architecture systems, a     local user able to create ping sockets could use this     flaw to crash the system. On non-x86-64 architecture     systems, a local user able to create ping sockets could     use this flaw to escalate their privileges on the     system.(CVE-2015-3636i1/4%0

  - Incorrect buffer length handling was found in the     ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in     the Linux kernel, which could be exploited by malicious     NCPFS servers to crash the kernel or possibly execute     an arbitrary code.(CVE-2018-8822i1/4%0

  - ** DISPUTED ** Kernel Samepage Merging (KSM) in the     Linux kernel 2.6.32 through 4.x does not prevent use of     a write-timing side channel, which allows guest OS     users to defeat the ASLR protection mechanism on other     guest OS instances via a Cross-VM ASL INtrospection     (CAIN) attack. NOTE: the vendor states 'Basically if     you care about this attack vector, disable     deduplication.' Share-until-written approaches for     memory conservation among mutually untrusting tenants     are inherently detectable for information disclosure,     and can be classified as potentially misunderstood     behaviors rather than vulnerabilities.(CVE-2015-2877i1/4%0

  - The tty_set_termios_ldisc() function in     'drivers/tty/tty_ldisc.c' in the Linux kernel before     4.5 allows local users to obtain sensitive information     from kernel memory by reading a tty data     structure.(CVE-2015-8964i1/4%0

  - An issue was discovered in the Linux kernel through     4.17.2. vbg_misc_device_ioctl() in     drivers/virt/vboxguest/vboxguest_linux.c reads the same     user data twice with copy_from_user. The header part of     the user data is double-fetched, and a malicious user     thread can tamper with the critical variables     (hdr.size_in and hdr.size_out) in the header between     the two fetches because of a race condition, leading to     severe kernel errors, such as buffer over-accesses.
    This bug can cause a local denial of service and     information leakage.(CVE-2018-12633i1/4%0

  - ** RESERVED ** This candidate has been reserved by an     organization or individual that will use it when     announcing a new security problem. When the candidate     has been publicized, the details for this candidate     will be provided.(CVE-2018-1092i1/4%0

  - fs/f2fs/extent_cache.c in the Linux kernel, before     4.13, mishandles extent trees. This allows local users     to cause a denial of service via an application with     multiple threads.(CVE-2017-18193i1/4%0

  - A design flaw was found in the file extended attribute     handling of the Linux kernel's handling of cached     attributes. Too many entries in the cache cause a soft     lockup while attempting to iterate the cache and access     relevant locks.(CVE-2015-8952i1/4%0

  - Off-by-one error in the pipe_advance function in     lib/iov_iter.c in the Linux kernel before 4.9.5 allows     local users to obtain sensitive information from     uninitialized heap-memory locations in opportunistic     circumstances by reading from a pipe after an incorrect     buffer-release decision.(CVE-2017-5550i1/4%0

  - The HMAC implementation (crypto/hmac.c) in the Linux     kernel, before 4.14.8, does not validate that the     underlying cryptographic hash algorithm is unkeyed.
    This allows a local attacker, able to use the     AF_ALG-based hash interface     (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash     algorithm (CONFIG_CRYPTO_SHA3), to cause a kernel stack     buffer overflow by executing a crafted sequence of     system calls that encounter a missing SHA-3     initialization.(CVE-2017-17806i1/4%0

  - The mp_get_count function in     drivers/staging/sb105x/sb_pci_mp.c in the Linux kernel     before 3.12 does not initialize a certain data     structure, which allows local users to obtain sensitive     information from kernel stack memory via a TIOCGICOUNT     ioctl call.(CVE-2013-4516i1/4%0

  - The perf_cpu_time_max_percent_handler function in     kernel/events/core.c in the Linux kernel before 4.11     allows local users to cause a denial of service     (integer overflow) or possibly have unspecified other     impact via a large value, as demonstrated by an     incorrect sample-rate calculation.(CVE-2017-18255i1/4%0

  - An issue was discovered in the btrfs filesystem code in     the Linux kernel. An invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when     mounting a crafted btrfs image could lead to a system     crash and a denial of service.(CVE-2018-14609i1/4%0

  - The oz_usb_handle_ep_data function in     drivers/staging/ozwpan/ozusbsvc1.c in the OZWPAN driver     in the Linux kernel through 4.0.5 allows remote     attackers to cause a denial of service (divide-by-zero     error and system crash) via a crafted     packet.(CVE-2015-4003i1/4%0

  - drivers/hid/hid-logitech-dj.c in the Human Interface     Device (HID) subsystem in the Linux kernel through     3.11, when CONFIG_HID_LOGITECH_DJ is enabled, allows     physically proximate attackers to cause a denial of     service (NULL pointer dereference and OOPS) or obtain     sensitive information from kernel memory via a crafted     device.(CVE-2013-2895i1/4%0

  - drivers/usb/serial/cypress_m8.c in the Linux kernel     before 4.5.1 allows physically proximate attackers to     cause a denial of service (NULL pointer dereference and     system crash) via a USB device without both an     interrupt-in and an interrupt-out endpoint descriptor,     related to the cypress_generic_port_probe and     cypress_open functions.(CVE-2016-3137i1/4%0

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update of the linux package has been released.

The SUSE Linux Enterprise 12 SP2 LTSS kernel was updated to 4.4.121 to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-8781: The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c had an integer-overflow vulnerability that allowed local users with access to the udldrmfb driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space (bnc#1090643).

CVE-2018-10124: The kill_something_info function in kernel/signal.c might have allowed local users to cause a denial of service via an INT_MIN argument (bnc#1089752).

CVE-2018-10087: The kernel_wait4 function in kernel/exit.c might have allowed local users to cause a denial of service by triggering an attempted use of the -INT_MIN value (bnc#1089608).

CVE-2017-18257: The __get_data_block function in fs/f2fs/data.c in the Linux kernel allowed local users to cause a denial of service (integer overflow and loop) via crafted use of the open and fallocate system calls with an FS_IOC_FIEMAP ioctl. (bnc#1088241)

CVE-2018-8822: Incorrect buffer length handling in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c could be exploited by malicious NCPFS servers to crash the kernel or execute code (bnc#1086162).

CVE-2018-8043: The unimac_mdio_probe function in drivers/net/phy/mdio-bcm-unimac.c did not validate certain resource availability, which allowed local users to cause a denial of service (NULL pointer dereference) (bnc#1084829).

CVE-2018-7740: The resv_map_release function in mm/hugetlb.c allowed local users to cause a denial of service (BUG) via a crafted application that made mmap system calls and has a large pgoff argument to the remap_file_pages system call (bnc#1084353).

CVE-2018-1087: And an unprivileged KVM guest user could use this flaw to potentially escalate their privileges inside a guest. (bsc#1087088)

CVE-2018-8897: An unprivileged system user could use incorrect set up interrupt stacks to crash the Linux kernel resulting in DoS issue.
(bsc#1087088)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

It was discovered that the netlink subsystem in the Linux kernel did not properly restrict observations of netlink messages to the appropriate net namespace. A local attacker could use this to expose sensitive information (kernel netlink traffic). (CVE-2017-17449)

Tuba Yavuz discovered that a double-free error existed in the USBTV007 driver of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
(CVE-2017-17975)

It was discovered that a race condition existed in the Device Mapper component of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18203)

It was discovered that an infinite loop could occur in the madvise(2) implementation in the Linux kernel in certain circumstances. A local attacker could use this to cause a denial of service (system hang).
(CVE-2017-18208)

Silvio Cesare discovered a buffer overwrite existed in the NCPFS implementation in the Linux kernel. A remote attacker controlling a malicious NCPFS server could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-8822).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3656-1 advisory.

  - Use-after-free in the usbtv_probe function in drivers/media/usb/usbtv/usbtv-core.c in the Linux kernel     through 4.14.10 allows attackers to cause a denial of service (system crash) or possibly have unspecified     other impact by triggering failure of audio registration, because a kfree of the usbtv data structure     occurs during a usbtv_video_free call, but the usbtv_video_fail label's code attempts to both access and     free this data structure. (CVE-2017-17975)

  - fs/f2fs/extent_cache.c in the Linux kernel before 4.13 mishandles extent trees, which allows local users     to cause a denial of service (BUG) via an application with multiple threads. (CVE-2017-18193)

  - In the Linux kernel before 4.12, Hisilicon Network Subsystem (HNS) does not consider the ETH_SS_PRIV_FLAGS     case when retrieving sset_count data, which allows local users to cause a denial of service (buffer     overflow and memory corruption) or possibly have unspecified other impact, as demonstrated by     incompatibility between hns_get_sset_count and ethtool_get_strings. (CVE-2017-18222)

  - The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that     contains a jump but lacks a user-defined chain, which allows local users to cause a denial of service     (NULL pointer dereference) by leveraging the CAP_NET_RAW or CAP_NET_ADMIN capability, related to     arpt_do_table in net/ipv4/netfilter/arp_tables.c, ipt_do_table in net/ipv4/netfilter/ip_tables.c, and     ip6t_do_table in net/ipv6/netfilter/ip6_tables.c. (CVE-2018-1065)

  - A flaw was found in the Linux 4.x kernel's implementation of 32-bit syscall interface for bridging. This     allowed a privileged user to arbitrarily write to a limited range of kernel memory. (CVE-2018-1068)

  - Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit()     function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of     certain crafted system calls. (CVE-2018-1130)

  - In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the
    _sctp_make_chunk() function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be     exploited to cause a kernel crash. (CVE-2018-5803)

  - The blkcg_init_queue function in block/blk-cgroup.c in the Linux kernel before 4.11 allows local users to     cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation     failure. (CVE-2018-7480)

  - Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux     kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read     accesses to files in the /sys/class/sas_phy directory, as demonstrated by the     /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file. (CVE-2018-7757)

  - Race condition in the store_int_with_restart() function in arch/x86/kernel/cpu/mcheck/mce.c in the Linux     kernel through 4.15.7 allows local users to cause a denial of service (panic) by leveraging root access to     write to the check_interval file in a /sys/devices/system/machinecheck/machinecheck<cpu number> directory.
    NOTE: a third party has indicated that this report is not security relevant (CVE-2018-7995)

  - The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c at the Linux kernel version 3.4 and up to and     including 4.15 has an integer-overflow vulnerability allowing local users with access to the udldrmfb     driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution     in kernel space. (CVE-2018-8781)

  - Incorrect buffer length handling in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux     kernel through 4.15.11, and in drivers/staging/ncpfs/ncplib_kernel.c in the Linux kernel 4.16-rc through     4.16-rc6, could be exploited by malicious NCPFS servers to crash the kernel or execute code.
    (CVE-2018-8822)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3655-1 advisory.

  - The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users     to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial     of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.
    (CVE-2017-12134)

  - An elevation of privilege vulnerability in the Upstream kernel bluez. Product: Android. Versions: Android     kernel. Android ID: A-63527053. (CVE-2017-13220)

  - A information disclosure vulnerability in the Upstream kernel encrypted-keys. Product: Android. Versions:
    Android kernel. Android ID: A-70526974. (CVE-2017-13305)

  - The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4,     when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net     namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN     capability to sniff an nlmon interface for all Netlink activity on the system. (CVE-2017-17449)

  - drivers/input/serio/i8042.c in the Linux kernel before 4.12.4 allows attackers to cause a denial of     service (NULL pointer dereference and system crash) or possibly have unspecified other impact because the     port->exists value can change after it is validated. (CVE-2017-18079)

  - The dm_get_from_kobject function in drivers/md/dm.c in the Linux kernel before 4.14.3 allow local users to     cause a denial of service (BUG) by leveraging a race condition with __dm_destroy during creation and     removal of DM devices. (CVE-2017-18203)

  - The ocfs2_setattr function in fs/ocfs2/file.c in the Linux kernel before 4.14.2 allows local users to     cause a denial of service (deadlock) via DIO requests. (CVE-2017-18204)

  - The madvise_willneed function in mm/madvise.c in the Linux kernel before 4.14.4 allows local users to     cause a denial of service (infinite loop) by triggering use of MADVISE_WILLNEED for a DAX mapping.
    (CVE-2017-18208)

  - The __munlock_pagevec function in mm/mlock.c in the Linux kernel before 4.11.4 allows local users to cause     a denial of service (NR_MLOCK accounting corruption) via crafted use of mlockall and munlockall system     calls. (CVE-2017-18221)

  - Systems with microprocessors utilizing speculative execution and speculative execution of memory reads     before the addresses of all prior memory writes are known may allow unauthorized disclosure of information     to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB),     Variant 4. (CVE-2018-3639)

  - Incorrect buffer length handling in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux     kernel through 4.15.11, and in drivers/staging/ncpfs/ncplib_kernel.c in the Linux kernel 4.16-rc through     4.16-rc6, could be exploited by malicious NCPFS servers to crash the kernel or execute code.
    (CVE-2018-8822)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3654-2 advisory.

  - Use-after-free in the usbtv_probe function in drivers/media/usb/usbtv/usbtv-core.c in the Linux kernel     through 4.14.10 allows attackers to cause a denial of service (system crash) or possibly have unspecified     other impact by triggering failure of audio registration, because a kfree of the usbtv data structure     occurs during a usbtv_video_free call, but the usbtv_video_fail label's code attempts to both access and     free this data structure. (CVE-2017-17975)

  - fs/f2fs/extent_cache.c in the Linux kernel before 4.13 mishandles extent trees, which allows local users     to cause a denial of service (BUG) via an application with multiple threads. (CVE-2017-18193)

  - In the Linux kernel before 4.12, Hisilicon Network Subsystem (HNS) does not consider the ETH_SS_PRIV_FLAGS     case when retrieving sset_count data, which allows local users to cause a denial of service (buffer     overflow and memory corruption) or possibly have unspecified other impact, as demonstrated by     incompatibility between hns_get_sset_count and ethtool_get_strings. (CVE-2017-18222)

  - The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that     contains a jump but lacks a user-defined chain, which allows local users to cause a denial of service     (NULL pointer dereference) by leveraging the CAP_NET_RAW or CAP_NET_ADMIN capability, related to     arpt_do_table in net/ipv4/netfilter/arp_tables.c, ipt_do_table in net/ipv4/netfilter/ip_tables.c, and     ip6t_do_table in net/ipv6/netfilter/ip6_tables.c. (CVE-2018-1065)

  - A flaw was found in the Linux 4.x kernel's implementation of 32-bit syscall interface for bridging. This     allowed a privileged user to arbitrarily write to a limited range of kernel memory. (CVE-2018-1068)

  - Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit()     function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of     certain crafted system calls. (CVE-2018-1130)

  - Systems with microprocessors utilizing speculative execution and speculative execution of memory reads     before the addresses of all prior memory writes are known may allow unauthorized disclosure of information     to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB),     Variant 4. (CVE-2018-3639)

  - In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the
    _sctp_make_chunk() function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be     exploited to cause a kernel crash. (CVE-2018-5803)

  - The blkcg_init_queue function in block/blk-cgroup.c in the Linux kernel before 4.11 allows local users to     cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation     failure. (CVE-2018-7480)

  - Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux     kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read     accesses to files in the /sys/class/sas_phy directory, as demonstrated by the     /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file. (CVE-2018-7757)

  - Race condition in the store_int_with_restart() function in arch/x86/kernel/cpu/mcheck/mce.c in the Linux     kernel through 4.15.7 allows local users to cause a denial of service (panic) by leveraging root access to     write to the check_interval file in a /sys/devices/system/machinecheck/machinecheck<cpu number> directory.
    NOTE: a third party has indicated that this report is not security relevant (CVE-2018-7995)

  - The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c at the Linux kernel version 3.4 and up to and     including 4.15 has an integer-overflow vulnerability allowing local users with access to the udldrmfb     driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution     in kernel space. (CVE-2018-8781)

  - Incorrect buffer length handling in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux     kernel through 4.15.11, and in drivers/staging/ncpfs/ncplib_kernel.c in the Linux kernel 4.16-rc through     4.16-rc6, could be exploited by malicious NCPFS servers to crash the kernel or execute code.
    (CVE-2018-8822)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3654-1 advisory.

  - Use-after-free in the usbtv_probe function in drivers/media/usb/usbtv/usbtv-core.c in the Linux kernel     through 4.14.10 allows attackers to cause a denial of service (system crash) or possibly have unspecified     other impact by triggering failure of audio registration, because a kfree of the usbtv data structure     occurs during a usbtv_video_free call, but the usbtv_video_fail label's code attempts to both access and     free this data structure. (CVE-2017-17975)

  - fs/f2fs/extent_cache.c in the Linux kernel before 4.13 mishandles extent trees, which allows local users     to cause a denial of service (BUG) via an application with multiple threads. (CVE-2017-18193)

  - In the Linux kernel before 4.12, Hisilicon Network Subsystem (HNS) does not consider the ETH_SS_PRIV_FLAGS     case when retrieving sset_count data, which allows local users to cause a denial of service (buffer     overflow and memory corruption) or possibly have unspecified other impact, as demonstrated by     incompatibility between hns_get_sset_count and ethtool_get_strings. (CVE-2017-18222)

  - The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that     contains a jump but lacks a user-defined chain, which allows local users to cause a denial of service     (NULL pointer dereference) by leveraging the CAP_NET_RAW or CAP_NET_ADMIN capability, related to     arpt_do_table in net/ipv4/netfilter/arp_tables.c, ipt_do_table in net/ipv4/netfilter/ip_tables.c, and     ip6t_do_table in net/ipv6/netfilter/ip6_tables.c. (CVE-2018-1065)

  - A flaw was found in the Linux 4.x kernel's implementation of 32-bit syscall interface for bridging. This     allowed a privileged user to arbitrarily write to a limited range of kernel memory. (CVE-2018-1068)

  - Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit()     function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of     certain crafted system calls. (CVE-2018-1130)

  - Systems with microprocessors utilizing speculative execution and speculative execution of memory reads     before the addresses of all prior memory writes are known may allow unauthorized disclosure of information     to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB),     Variant 4. (CVE-2018-3639)

  - In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the
    _sctp_make_chunk() function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be     exploited to cause a kernel crash. (CVE-2018-5803)

  - The blkcg_init_queue function in block/blk-cgroup.c in the Linux kernel before 4.11 allows local users to     cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation     failure. (CVE-2018-7480)

  - Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux     kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read     accesses to files in the /sys/class/sas_phy directory, as demonstrated by the     /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file. (CVE-2018-7757)

  - Race condition in the store_int_with_restart() function in arch/x86/kernel/cpu/mcheck/mce.c in the Linux     kernel through 4.15.7 allows local users to cause a denial of service (panic) by leveraging root access to     write to the check_interval file in a /sys/devices/system/machinecheck/machinecheck<cpu number> directory.
    NOTE: a third party has indicated that this report is not security relevant (CVE-2018-7995)

  - The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c at the Linux kernel version 3.4 and up to and     including 4.15 has an integer-overflow vulnerability allowing local users with access to the udldrmfb     driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution     in kernel space. (CVE-2018-8781)

  - Incorrect buffer length handling in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux     kernel through 4.15.11, and in drivers/staging/ncpfs/ncplib_kernel.c in the Linux kernel 4.16-rc through     4.16-rc6, could be exploited by malicious NCPFS servers to crash the kernel or execute code.
    (CVE-2018-8822)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3653-2 advisory.

  - The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4,     when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net     namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN     capability to sniff an nlmon interface for all Netlink activity on the system. (CVE-2017-17449)

  - Use-after-free in the usbtv_probe function in drivers/media/usb/usbtv/usbtv-core.c in the Linux kernel     through 4.14.10 allows attackers to cause a denial of service (system crash) or possibly have unspecified     other impact by triggering failure of audio registration, because a kfree of the usbtv data structure     occurs during a usbtv_video_free call, but the usbtv_video_fail label's code attempts to both access and     free this data structure. (CVE-2017-17975)

  - The dm_get_from_kobject function in drivers/md/dm.c in the Linux kernel before 4.14.3 allow local users to     cause a denial of service (BUG) by leveraging a race condition with __dm_destroy during creation and     removal of DM devices. (CVE-2017-18203)

  - The madvise_willneed function in mm/madvise.c in the Linux kernel before 4.14.4 allows local users to     cause a denial of service (infinite loop) by triggering use of MADVISE_WILLNEED for a DAX mapping.
    (CVE-2017-18208)

  - Systems with microprocessors utilizing speculative execution and speculative execution of memory reads     before the addresses of all prior memory writes are known may allow unauthorized disclosure of information     to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB),     Variant 4. (CVE-2018-3639)

  - Incorrect buffer length handling in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux     kernel through 4.15.11, and in drivers/staging/ncpfs/ncplib_kernel.c in the Linux kernel 4.16-rc through     4.16-rc6, could be exploited by malicious NCPFS servers to crash the kernel or execute code.
    (CVE-2018-8822)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2018-3639)

It was discovered that the netlink subsystem in the Linux kernel did not properly restrict observations of netlink messages to the appropriate net namespace. A local attacker could use this to expose sensitive information (kernel netlink traffic). (CVE-2017-17449)

Tuba Yavuz discovered that a double-free error existed in the USBTV007 driver of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
(CVE-2017-17975)

It was discovered that a race condition existed in the Device Mapper component of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18203)

It was discovered that an infinite loop could occur in the madvise(2) implementation in the Linux kernel in certain circumstances. A local attacker could use this to cause a denial of service (system hang).
(CVE-2017-18208)

Silvio Cesare discovered a buffer overwrite existed in the NCPFS implementation in the Linux kernel. A remote attacker controlling a malicious NCPFS server could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-8822).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 GA LTSS kernel was updated to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2018-1087: And an unprivileged KVM guest user could     use this flaw to potentially escalate their privileges     inside a guest. (bsc#1087088)

  - CVE-2018-8897: An unprivileged system user could use     incorrect set up interrupt stacks to crash the Linux     kernel resulting in DoS issue. (bsc#1087088)

  - CVE-2018-8781: The udl_fb_mmap function in     drivers/gpu/drm/udl/udl_fb.c had an integer-overflow     vulnerability allowing local users with access to the     udldrmfb driver to obtain full read and write     permissions on kernel physical pages, resulting in a     code execution in kernel space (bnc#1090643).

  - CVE-2018-10124: The kill_something_info function in     kernel/signal.c might allow local users to cause a     denial of service via an INT_MIN argument (bnc#1089752).

  - CVE-2018-10087: The kernel_wait4 function in     kernel/exit.c might allow local users to cause a denial     of service by triggering an attempted use of the
    -INT_MIN value (bnc#1089608).

  - CVE-2018-7757: Memory leak in the sas_smp_get_phy_events     function in drivers/scsi/libsas/sas_expander.c allowed     local users to cause a denial of service (memory     consumption) via many read accesses to files in the     /sys/class/sas_phy directory, as demonstrated by the     /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file     (bnc#1084536 1087209).

  - CVE-2017-13220: An elevation of privilege vulnerability     in the Upstream kernel bluez was fixed. (bnc#1076537).

  - CVE-2017-11089: A buffer overread was observed in     nl80211_set_station when user space application sends     attribute NL80211_ATTR_LOCAL_MESH_POWER_MODE with data     of size less than 4 bytes (bnc#1088261).

  - CVE-2017-0861: Use-after-free vulnerability in the     snd_pcm_info function in the ALSA subsystem allowed     attackers to gain privileges via unspecified vectors     (bnc#1088260).

  - CVE-2018-8822: Incorrect buffer length handling in the     ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c     could be exploited by malicious NCPFS servers to crash     the kernel or execute code (bnc#1086162).

  - CVE-2017-18203: The dm_get_from_kobject function in     drivers/md/dm.c allow local users to cause a denial of     service (BUG) by leveraging a race condition with
    __dm_destroy during creation and removal of DM devices     (bnc#1083242).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 SP1 LTSS kernel was updated to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2018-1087: And an unprivileged KVM guest user could     use this flaw to potentially escalate their privileges     inside a guest. (bsc#1087088)

  - CVE-2018-8897: An unprivileged system user could use     incorrect set up interrupt stacks to crash the Linux     kernel resulting in DoS issue. (bsc#1087088)

  - CVE-2018-8781: The udl_fb_mmap function in     drivers/gpu/drm/udl/udl_fb.c had an integer-overflow     vulnerability allowing local users with access to the     udldrmfb driver to obtain full read and write     permissions on kernel physical pages, resulting in a     code execution in kernel space (bnc#1090643).

  - CVE-2018-10124: The kill_something_info function in     kernel/signal.c might allow local users to cause a     denial of service via an INT_MIN argument (bnc#1089752).

  - CVE-2018-10087: The kernel_wait4 function in     kernel/exit.c in might allow local users to cause a     denial of service by triggering an attempted use of the
    -INT_MIN value (bnc#1089608).

  - CVE-2018-7757: Memory leak in the sas_smp_get_phy_events     function in drivers/scsi/libsas/sas_expander.c allowed     local users to cause a denial of service (memory     consumption) via many read accesses to files in the     /sys/class/sas_phy directory, as demonstrated by the     /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file     (bnc#1084536).

  - CVE-2017-13220: An elevation of privilege vulnerability     in the Upstream kernel bluez was fixed. (bnc#1076537).

  - CVE-2017-11089: A buffer overread is observed in     nl80211_set_station when user space application sends     attribute NL80211_ATTR_LOCAL_MESH_POWER_MODE with data     of size less than 4 bytes (bnc#1088261).

  - CVE-2017-0861: Use-after-free vulnerability in the     snd_pcm_info function in the ALSA subsystem allowed     attackers to gain privileges via unspecified vectors     (bnc#1088260).

  - CVE-2018-8822: Incorrect buffer length handling in the     ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c     could be exploited by malicious NCPFS servers to crash     the kernel or execute code (bnc#1086162).

  - CVE-2017-18203: The dm_get_from_kobject function in     drivers/md/dm.c allowed local users to cause a denial of     service (BUG) by leveraging a race condition with
    __dm_destroy during creation and removal of DM devices     (bnc#1083242).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 SP2 LTSS kernel was updated to 4.4.121 to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2018-8781: The udl_fb_mmap function in     drivers/gpu/drm/udl/udl_fb.c had an integer-overflow     vulnerability that allowed local users with access to     the udldrmfb driver to obtain full read and write     permissions on kernel physical pages, resulting in a     code execution in kernel space (bnc#1090643).

  - CVE-2018-10124: The kill_something_info function in     kernel/signal.c might have allowed local users to cause     a denial of service via an INT_MIN argument     (bnc#1089752).

  - CVE-2018-10087: The kernel_wait4 function in     kernel/exit.c might have allowed local users to cause a     denial of service by triggering an attempted use of the
    -INT_MIN value (bnc#1089608).

  - CVE-2017-18257: The __get_data_block function in     fs/f2fs/data.c in the Linux kernel allowed local users     to cause a denial of service (integer overflow and loop)     via crafted use of the open and fallocate system calls     with an FS_IOC_FIEMAP ioctl. (bnc#1088241)

  - CVE-2018-8822: Incorrect buffer length handling in the     ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c     could be exploited by malicious NCPFS servers to crash     the kernel or execute code (bnc#1086162).

  - CVE-2018-8043: The unimac_mdio_probe function in     drivers/net/phy/mdio-bcm-unimac.c did not validate     certain resource availability, which allowed local users     to cause a denial of service (NULL pointer dereference)     (bnc#1084829).

  - CVE-2018-7740: The resv_map_release function in     mm/hugetlb.c allowed local users to cause a denial of     service (BUG) via a crafted application that made mmap     system calls and has a large pgoff argument to the     remap_file_pages system call (bnc#1084353).

  - CVE-2018-1087: And an unprivileged KVM guest user could     use this flaw to potentially escalate their privileges     inside a guest. (bsc#1087088)

  - CVE-2018-8897: An unprivileged system user could use     incorrect set up interrupt stacks to crash the Linux     kernel resulting in DoS issue. (bsc#1087088)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 11 SP3 LTSS kernel was updated to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2018-1087: And an unprivileged KVM guest user could     use this flaw to potentially escalate their privileges     inside a guest. (bsc#1087088)

  - CVE-2018-8897: An unprivileged system user could use     incorrect set up interrupt stacks to crash the Linux     kernel resulting in DoS issue. (bsc#1087088)

  - CVE-2018-10124: The kill_something_info function in     kernel/signal.c might allow local users to cause a     denial of service via an INT_MIN argument (bnc#1089752).

  - CVE-2018-10087: The kernel_wait4 function in     kernel/exit.c might allow local users to cause a denial     of service by triggering an attempted use of the
    -INT_MIN value (bnc#1089608).

  - CVE-2018-7757: Memory leak in the sas_smp_get_phy_events     function in drivers/scsi/libsas/sas_expander.c allowed     local users to cause a denial of service (memory     consumption) via many read accesses to files in the     /sys/class/sas_phy directory, as demonstrated by the     /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file     (bnc#1084536 1087209).

  - CVE-2018-7566: A Buffer Overflow via an     SNDRV_SEQ_IOCTL_SET_CLIENT_POOL ioctl write operation to     /dev/snd/seq by a local user was fixed (bnc#1083483).

  - CVE-2017-0861: Use-after-free vulnerability in the     snd_pcm_info function in the ALSA subsystem allowed     attackers to gain privileges via unspecified vectors     (bnc#1088260).

  - CVE-2018-8822: Incorrect buffer length handling in the     ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c     could be exploited by malicious NCPFS servers to crash     the kernel or execute code (bnc#1086162).

  - CVE-2017-13166: An elevation of privilege vulnerability     in the kernel v4l2 video driver. (bnc#1072865).

  - CVE-2017-18203: The dm_get_from_kobject function in     drivers/md/dm.c allow local users to cause a denial of     service (BUG) by leveraging a race condition with
    __dm_destroy during creation and removal of DM devices     (bnc#1083242).

  - CVE-2017-16911: The vhci_hcd driver allowed allows local     attackers to disclose kernel memory addresses.
    Successful exploitation requires that a USB device is     attached over IP (bnc#1078674).

  - CVE-2017-18208: The madvise_willneed function in     mm/madvise.c allowed local users to cause a denial of     service (infinite loop) by triggering use of     MADVISE_WILLNEED for a DAX mapping (bnc#1083494).

  - CVE-2017-16644: The hdpvr_probe function in     drivers/media/usb/hdpvr/hdpvr-core.c allowed local users     to cause a denial of service (improper error handling     and system crash) or possibly have unspecified other     impact via a crafted USB device (bnc#1067118).

  - CVE-2018-6927: The futex_requeue function in     kernel/futex.c might allow attackers to cause a denial     of service (integer overflow) or possibly have     unspecified other impact by triggering a negative wake     or requeue value (bnc#1080757).

  - CVE-2017-16914: The 'stub_send_ret_submit()' function     (drivers/usb/usbip/stub_tx.c) allowed attackers to cause     a denial of service (NULL pointer dereference) via a     specially crafted USB over IP packet (bnc#1078669).

  - CVE-2016-7915: The hid_input_field function in     drivers/hid/hid-core.c allowed physically proximate     attackers to obtain sensitive information from kernel     memory or cause a denial of service (out-of-bounds read)     by connecting a device, as demonstrated by a Logitech DJ     receiver (bnc#1010470).

  - CVE-2015-5156: The virtnet_probe function in     drivers/net/virtio_net.c attempted to support a FRAGLIST     feature without proper memory allocation, which allowed     guest OS users to cause a denial of service (buffer     overflow and memory corruption) via a crafted sequence     of fragmented packets (bnc#940776).

  - CVE-2017-12190: The bio_map_user_iov and bio_unmap_user     functions in block/bio.c did unbalanced refcounting when     a SCSI I/O vector has small consecutive buffers     belonging to the same page. The bio_add_pc_page function     merges them into one, but the page reference is never     dropped. This causes a memory leak and possible system     lockup (exploitable against the host OS by a guest OS     user, if a SCSI disk is passed through to a virtual     machine) due to an out-of-memory condition     (bnc#1062568).

  - CVE-2017-16912: The 'get_pipe()' function     (drivers/usb/usbip/stub_rx.c) allowed attackers to cause     a denial of service (out-of-bounds read) via a specially     crafted USB over IP packet (bnc#1078673).

  - CVE-2017-16913: The 'stub_recv_cmd_submit()' function     (drivers/usb/usbip/stub_rx.c) when handling CMD_SUBMIT     packets allowed attackers to cause a denial of service     (arbitrary memory allocation) via a specially crafted     USB over IP packet (bnc#1078672).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

CVE-2017-0861

Robb Glasser reported a potential use-after-free in the ALSA (sound) PCM core. We believe this was not possible in practice.

CVE-2017-5715

Multiple researchers have discovered a vulnerability in various processors supporting speculative execution, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system.

This specific attack has been named Spectre variant 2 (branch target injection) and is mitigated for the x86 architecture (amd64 and i386) by using the 'retpoline' compiler feature which allows indirect branches to be isolated from speculative execution.

CVE-2017-13166

A bug in the 32-bit compatibility layer of the v4l2 ioctl handling code has been found. Memory protections ensuring user-provided buffers always point to userland memory were disabled, allowing destination addresses to be in kernel space. On a 64-bit kernel (amd64 flavour) a local user with access to a suitable video device can exploit this to overwrite kernel memory, leading to privilege escalation.

CVE-2017-16526

Andrey Konovalov reported that the UWB subsystem may dereference an invalid pointer in an error case. A local user might be able to use this for denial of service.

CVE-2017-16911

Secunia Research reported that the USB/IP vhci_hcd driver exposed kernel heap addresses to local users. This information could aid the exploitation of other vulnerabilities.

CVE-2017-16912

Secunia Research reported that the USB/IP stub driver failed to perform a range check on a received packet header field, leading to an out-of-bounds read. A remote user able to connect to the USB/IP server could use this for denial of service.

CVE-2017-16913

Secunia Research reported that the USB/IP stub driver failed to perform a range check on a received packet header field, leading to excessive memory allocation. A remote user able to connect to the USB/IP server could use this for denial of service.

CVE-2017-16914

Secunia Research reported that the USB/IP stub driver failed to check for an invalid combination of fields in a recieved packet, leading to a NULL pointer dereference. A remote user able to connect to the USB/IP server could use this for denial of service.

CVE-2017-18017

Denys Fedoryshchenko reported that the netfilter xt_TCPMSS module failed to validate TCP header lengths, potentially leading to a use-after-free. If this module is loaded, it could be used by a remote attacker for denial of service or possibly for code execution.

CVE-2017-18203

Hou Tao reported that there was a race condition in creation and deletion of device-mapper (DM) devices. A local user could potentially use this for denial of service.

CVE-2017-18216

Alex Chen reported that the OCFS2 filesystem failed to hold a necessary lock during nodemanager sysfs file operations, potentially leading to a NULL pointer dereference. A local user could use this for denial of service.

CVE-2018-1068

The syzkaller tool found that the 32-bit compatibility layer of ebtables did not sufficiently validate offset values. On a 64-bit kernel (amd64 flavour), a local user with the CAP_NET_ADMIN capability could use this to overwrite kernel memory, possibly leading to privilege escalation.

CVE-2018-1092

Wen Xu reported that a crafted ext4 filesystem image would trigger a null dereference when mounted. A local user able to mount arbitrary filesystems could use this for denial of service.

CVE-2018-5332

Mohamed Ghannam reported that the RDS protocol did not sufficiently validate RDMA requests, leading to an out-of-bounds write. A local attacker on a system with the rds module loaded could use this for denial of service or possibly for privilege escalation.

CVE-2018-5333

Mohamed Ghannam reported that the RDS protocol did not properly handle an error case, leading to a NULL pointer dereference. A local attacker on a system with the rds module loaded could possibly use this for denial of service.

CVE-2018-5750

Wang Qize reported that the ACPI sbshc driver logged a kernel heap address. This information could aid the exploitation of other vulnerabilities.

CVE-2018-5803

Alexey Kodanev reported that the SCTP protocol did not range-check the length of chunks to be created. A local or remote user could use this to cause a denial of service.

CVE-2018-6927

Li Jinyue reported that the FUTEX_REQUEUE operation on futexes did not check for negative parameter values, which might lead to a denial of service or other security impact.

CVE-2018-7492

The syzkaller tool found that the RDS protocol was lacking a NULL pointer check. A local attacker on a system with the rds module loaded could use this for denial of service.

CVE-2018-7566

&#x8303;&#x9F99;&#x98DE; (Fan LongFei) reported a race condition in the ALSA (sound) sequencer core, between write and ioctl operations.
This could lead to an out-of-bounds access or use-after-free. A local user with access to a sequencer device could use this for denial of service or possibly for privilege escalation.

CVE-2018-7740

Nic Losby reported that the hugetlbfs filesystem's mmap operation did not properly range-check the file offset. A local user with access to files on a hugetlbfs filesystem could use this to cause a denial of service.

CVE-2018-7757

Jason Yan reported a memory leak in the SAS (Serial-Attached SCSI) subsystem. A local user on a system with SAS devices could use this to cause a denial of service.

CVE-2018-7995

Seunghun Han reported a race condition in the x86 MCE (Machine Check Exception) driver. This is unlikely to have any security impact.

CVE-2018-8781

Eyal Itkin reported that the udl (DisplayLink) driver's mmap operation did not properly range-check the file offset. A local user with access to a udl framebuffer device could exploit this to overwrite kernel memory, leading to privilege escalation.

CVE-2018-8822

Dr Silvio Cesare of InfoSect reported that the ncpfs client implementation did not validate reply lengths from the server. An ncpfs server could use this to cause a denial of service or remote code execution in the client.

CVE-2018-1000004

Luo Quan reported a race condition in the ALSA (sound) sequencer core, between multiple ioctl operations. This could lead to a deadlock or use-after-free. A local user with access to a sequencer device could use this for denial of service or possibly for privilege escalation.

CVE-2018-1000199

Andy Lutomirski discovered that the ptrace subsystem did not sufficiently validate hardware breakpoint settings. Local users can use this to cause a denial of service, or possibly for privilege escalation, on x86 (amd64 and i386) and possibly other architectures.

Additionally, some mitigations for CVE-2017-5753 are included in this release :

CVE-2017-5753

Multiple researchers have discovered a vulnerability in various processors supporting speculative execution, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system.

This specific attack has been named Spectre variant 1 (bounds-check bypass) and is mitigated by identifying vulnerable code sections (array bounds checking followed by array access) and replacing the array access with the speculation-safe array_index_nospec() function.

More use sites will be added over time.

For Debian 7 'Wheezy', these problems have been fixed in version 3.2.101-1. This version also includes bug fixes from upstream versions up to and including 3.2.101. It also fixes a regression in the procfs hidepid option in the previous version (Debian bug #887106).

We recommend that you upgrade your linux packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

  - CVE-2017-5715     Multiple researchers have discovered a vulnerability in     various processors supporting speculative execution,     enabling an attacker controlling an unprivileged process     to read memory from arbitrary addresses, including from     the kernel and all other processes running on the     system.

  This specific attack has been named Spectre variant 2 (branch target   injection) and is mitigated for the x86 architecture (amd64 and   i386) by using the 'retpoline' compiler feature which allows   indirect branches to be isolated from speculative execution.

  - CVE-2017-5753     Multiple researchers have discovered a vulnerability in     various processors supporting speculative execution,     enabling an attacker controlling an unprivileged process     to read memory from arbitrary addresses, including from     the kernel and all other processes running on the     system.

  This specific attack has been named Spectre variant 1 (bounds-check   bypass) and is mitigated by identifying vulnerable code sections   (array bounds checking followed by array access) and replacing the   array access with the speculation-safe array_index_nospec()   function.

  More use sites will be added over time.

  - CVE-2017-17975     Tuba Yavuz reported a use-after-free flaw in the     USBTV007 audio-video grabber driver. A local user could     use this for denial of service by triggering failure of     audio registration.

  - CVE-2017-18193     Yunlei He reported that the f2fs implementation does not     properly handle extent trees, allowing a local user to     cause a denial of service via an application with     multiple threads.

  - CVE-2017-18216     Alex Chen reported that the OCFS2 filesystem failed to     hold a necessary lock during nodemanager sysfs file     operations, potentially leading to a NULL pointer     dereference. A local user could use this for denial of     service.

  - CVE-2017-18218     Jun He reported a use-after-free flaw in the Hisilicon     HNS ethernet driver. A local user could use this for     denial of service.

  - CVE-2017-18222     It was reported that the Hisilicon Network Subsystem     (HNS) driver implementation does not properly handle     ethtool private flags. A local user could use this for     denial of service or possibly have other impact.

  - CVE-2017-18224     Alex Chen reported that the OCFS2 filesystem omits the     use of a semaphore and consequently has a race condition     for access to the extent tree during read operations in     DIRECT mode. A local user could use this for denial of     service.

  - CVE-2017-18241     Yunlei He reported that the f2fs implementation does not     properly initialise its state if the 'noflush_merge'     mount option is used. A local user with access to a     filesystem mounted with this option could use this to     cause a denial of service.

  - CVE-2017-18257     It was reported that the f2fs implementation is prone to     an infinite loop caused by an integer overflow in the
    __get_data_block() function. A local user can use this     for denial of service via crafted use of the open and     fallocate system calls with an FS_IOC_FIEMAP ioctl.

  - CVE-2018-1065     The syzkaller tool found a NULL pointer dereference flaw     in the netfilter subsystem when handling certain     malformed iptables rulesets. A local user with the     CAP_NET_RAW or CAP_NET_ADMIN capability (in any user     namespace) could use this to cause a denial of service.
    Debian disables unprivileged user namespaces by default.

  - CVE-2018-1066     Dan Aloni reported to Red Hat that the CIFS client     implementation would dereference a NULL pointer if the     server sent an invalid response during NTLMSSP setup     negotiation. This could be used by a malicious server     for denial of service.

  - CVE-2018-1068     The syzkaller tool found that the 32-bit compatibility     layer of ebtables did not sufficiently validate offset     values. On a 64-bit kernel, a local user with the     CAP_NET_ADMIN capability (in any user namespace) could     use this to overwrite kernel memory, possibly leading to     privilege escalation. Debian disables unprivileged user     namespaces by default.

  - CVE-2018-1092     Wen Xu reported that a crafted ext4 filesystem image     would trigger a null dereference when mounted. A local     user able to mount arbitrary filesystems could use this     for denial of service.

  - CVE-2018-1093     Wen Xu reported that a crafted ext4 filesystem image     could trigger an out-of-bounds read in the     ext4_valid_block_bitmap() function. A local user able to     mount arbitrary filesystems could use this for denial of     service.

  - CVE-2018-1108     Jann Horn reported that crng_ready() does not properly     handle the crng_init variable states and the RNG could     be treated as cryptographically safe too early after     system boot.

  - CVE-2018-5803     Alexey Kodanev reported that the SCTP protocol did not     range-check the length of chunks to be created. A local     or remote user could use this to cause a denial of     service.

  - CVE-2018-7480     Hou Tao discovered a double-free flaw in the     blkcg_init_queue() function in block/blk-cgroup.c. A     local user could use this to cause a denial of service     or have other impact.

  - CVE-2018-7566     Fan LongFei reported a race condition in the ALSA     (sound) sequencer core, between write and ioctl     operations. This could lead to an out-of-bounds access     or use-after-free. A local user with access to a     sequencer device could use this for denial of service or     possibly for privilege escalation.

  - CVE-2018-7740     Nic Losby reported that the hugetlbfs filesystem's mmap     operation did not properly range-check the file offset.
    A local user with access to files on a hugetlbfs     filesystem could use this to cause a denial of service.

  - CVE-2018-7757     Jason Yan reported a memory leak in the SAS     (Serial-Attached SCSI) subsystem. A local user on a     system with SAS devices could use this to cause a denial     of service.

  - CVE-2018-7995     Seunghun Han reported a race condition in the x86 MCE     (Machine Check Exception) driver. This is unlikely to     have any security impact.

  - CVE-2018-8087     A memory leak flaw was found in the hwsim_new_radio_nl()     function in the simulated radio testing tool driver for     mac80211, allowing a local user to cause a denial of     service.

  - CVE-2018-8781     Eyal Itkin reported that the udl (DisplayLink) driver's     mmap operation did not properly range-check the file     offset. A local user with access to a udl framebuffer     device could exploit this to overwrite kernel memory,     leading to privilege escalation.

  - CVE-2018-8822     Dr Silvio Cesare of InfoSect reported that the ncpfs     client implementation did not validate reply lengths     from the server. An ncpfs server could use this to cause     a denial of service or remote code execution in the     client.

  - CVE-2018-10323     Wen Xu reported a NULL pointer dereference flaw in the     xfs_bmapi_write() function triggered when mounting and     operating a crafted xfs filesystem image. A local user     able to mount arbitrary filesystems could use this for     denial of service.

  - CVE-2018-1000199     Andy Lutomirski discovered that the ptrace subsystem did     not sufficiently validate hardware breakpoint settings.
    Local users can use this to cause a denial of service,     or possibly for privilege escalation, on x86 (amd64 and     i386) and possibly other architectures.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

  - CVE-2015-9016     Ming Lei reported a race condition in the multiqueue     block layer (blk-mq). On a system with a driver using     blk-mq (mtip32xx, null_blk, or virtio_blk), a local user     might be able to use this for denial of service or     possibly for privilege escalation.

  - CVE-2017-0861     Robb Glasser reported a potential use-after-free in the     ALSA (sound) PCM core. We believe this was not possible     in practice.

  - CVE-2017-5715     Multiple researchers have discovered a vulnerability in     various processors supporting speculative execution,     enabling an attacker controlling an unprivileged process     to read memory from arbitrary addresses, including from     the kernel and all other processes running on the     system.

  This specific attack has been named Spectre variant 2 (branch target   injection) and is mitigated for the x86 architecture (amd64 and   i386) by using the 'retpoline' compiler feature which allows   indirect branches to be isolated from speculative execution.

  - CVE-2017-5753     Multiple researchers have discovered a vulnerability in     various processors supporting speculative execution,     enabling an attacker controlling an unprivileged process     to read memory from arbitrary addresses, including from     the kernel and all other processes running on the     system.

  This specific attack has been named Spectre variant 1 (bounds-check   bypass) and is mitigated by identifying vulnerable code sections   (array bounds checking followed by array access) and replacing the   array access with the speculation-safe array_index_nospec()   function.

  More use sites will be added over time.

  - CVE-2017-13166     A bug in the 32-bit compatibility layer of the v4l2     ioctl handling code has been found. Memory protections     ensuring user-provided buffers always point to userland     memory were disabled, allowing destination addresses to     be in kernel space. On a 64-bit kernel a local user with     access to a suitable video device can exploit this to     overwrite kernel memory, leading to privilege     escalation.

  - CVE-2017-13220     Al Viro reported that the Bluetooth HIDP implementation     could dereference a pointer before performing the     necessary type check. A local user could use this to     cause a denial of service.

  - CVE-2017-16526     Andrey Konovalov reported that the UWB subsystem may     dereference an invalid pointer in an error case. A local     user might be able to use this for denial of service.

  - CVE-2017-16911     Secunia Research reported that the USB/IP vhci_hcd     driver exposed kernel heap addresses to local users.
    This information could aid the exploitation of other     vulnerabilities.

  - CVE-2017-16912     Secunia Research reported that the USB/IP stub driver     failed to perform a range check on a received packet     header field, leading to an out-of-bounds read. A remote     user able to connect to the USB/IP server could use this     for denial of service.

  - CVE-2017-16913     Secunia Research reported that the USB/IP stub driver     failed to perform a range check on a received packet     header field, leading to excessive memory allocation. A     remote user able to connect to the USB/IP server could     use this for denial of service.

  - CVE-2017-16914     Secunia Research reported that the USB/IP stub driver     failed to check for an invalid combination of fields in     a received packet, leading to a NULL pointer     dereference. A remote user able to connect to the USB/IP     server could use this for denial of service.

  - CVE-2017-18017     Denys Fedoryshchenko reported that the netfilter     xt_TCPMSS module failed to validate TCP header lengths,     potentially leading to a use-after-free. If this module     is loaded, it could be used by a remote attacker for     denial of service or possibly for code execution.

  - CVE-2017-18203     Hou Tao reported that there was a race condition in     creation and deletion of device-mapper (DM) devices. A     local user could potentially use this for denial of     service.

  - CVE-2017-18216     Alex Chen reported that the OCFS2 filesystem failed to     hold a necessary lock during nodemanager sysfs file     operations, potentially leading to a NULL pointer     dereference. A local user could use this for denial of     service.

  - CVE-2017-18232     Jason Yan reported a race condition in the SAS     (Serial-Attached SCSI) subsystem, between probing and     destroying a port. This could lead to a deadlock. A     physically present attacker could use this to cause a     denial of service.

  - CVE-2017-18241     Yunlei He reported that the f2fs implementation does not     properly initialise its state if the 'noflush_merge'     mount option is used. A local user with access to a     filesystem mounted with this option could use this to     cause a denial of service.

  - CVE-2018-1066     Dan Aloni reported to Red Hat that the CIFS client     implementation would dereference a NULL pointer if the     server sent an invalid response during NTLMSSP setup     negotiation. This could be used by a malicious server     for denial of service.

  - CVE-2018-1068     The syzkaller tool found that the 32-bit compatibility     layer of ebtables did not sufficiently validate offset     values. On a 64-bit kernel, a local user with the     CAP_NET_ADMIN capability (in any user namespace) could     use this to overwrite kernel memory, possibly leading to     privilege escalation. Debian disables unprivileged user     namespaces by default.

  - CVE-2018-1092     Wen Xu reported that a crafted ext4 filesystem image     would trigger a null dereference when mounted. A local     user able to mount arbitrary filesystems could use this     for denial of service.

  - CVE-2018-5332     Mohamed Ghannam reported that the RDS protocol did not     sufficiently validate RDMA requests, leading to an     out-of-bounds write. A local attacker on a system with     the rds module loaded could use this for denial of     service or possibly for privilege escalation.

  - CVE-2018-5333     Mohamed Ghannam reported that the RDS protocol did not     properly handle an error case, leading to a NULL pointer     dereference. A local attacker on a system with the rds     module loaded could possibly use this for denial of     service.

  - CVE-2018-5750     Wang Qize reported that the ACPI sbshc driver logged a     kernel heap address. This information could aid the     exploitation of other vulnerabilities.

  - CVE-2018-5803     Alexey Kodanev reported that the SCTP protocol did not     range-check the length of chunks to be created. A local     or remote user could use this to cause a denial of     service.

  - CVE-2018-6927     Li Jinyue reported that the FUTEX_REQUEUE operation on     futexes did not check for negative parameter values,     which might lead to a denial of service or other     security impact.

  - CVE-2018-7492     The syzkaller tool found that the RDS protocol was     lacking a null pointer check. A local attacker on a     system with the rds module loaded could use this for     denial of service.

  - CVE-2018-7566     Fan LongFei reported a race condition in the ALSA     (sound) sequencer core, between write and ioctl     operations. This could lead to an out-of-bounds access     or use-after-free. A local user with access to a     sequencer device could use this for denial of service or     possibly for privilege escalation.

  - CVE-2018-7740     Nic Losby reported that the hugetlbfs filesystem's mmap     operation did not properly range-check the file offset.
    A local user with access to files on a hugetlbfs     filesystem could use this to cause a denial of service.

  - CVE-2018-7757     Jason Yan reported a memory leak in the SAS     (Serial-Attached SCSI) subsystem. A local user on a     system with SAS devices could use this to cause a denial     of service.

  - CVE-2018-7995     Seunghun Han reported a race condition in the x86 MCE     (Machine Check Exception) driver. This is unlikely to     have any security impact.

  - CVE-2018-8781     Eyal Itkin reported that the udl (DisplayLink) driver's     mmap operation did not properly range-check the file     offset. A local user with access to a udl framebuffer     device could exploit this to overwrite kernel memory,     leading to privilege escalation.

  - CVE-2018-8822     Dr Silvio Cesare of InfoSect reported that the ncpfs     client implementation did not validate reply lengths     from the server. An ncpfs server could use this to cause     a denial of service or remote code execution in the     client.

  - CVE-2018-1000004     Luo Quan reported a race condition in the ALSA (sound)     sequencer core, between multiple ioctl operations. This     could lead to a deadlock or use-after-free. A local user     with access to a sequencer device could use this for     denial of service or possibly for privilege escalation.

  - CVE-2018-1000199     Andy Lutomirski discovered that the ptrace subsystem did     not sufficiently validate hardware breakpoint settings.
    Local users can use this to cause a denial of service,     or possibly for privilege escalation, on x86 (amd64 and     i386) and possibly other architectures.

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2017-5715: Systems with microprocessors utilizing     speculative execution and indirect branch prediction may     allow unauthorized disclosure of information to an     attacker with local user access via a side-channel     analysis (bnc#1068032). Enhancements and bugfixes over     the previous fixes have been added to this kernel.

  - CVE-2018-10087: The kernel_wait4 function in     kernel/exit.c might have allowed local users to cause a     denial of service by triggering an attempted use of the
    -INT_MIN value (bnc#1089608).

  - CVE-2018-7757: Memory leak in the sas_smp_get_phy_events     function in drivers/scsi/libsas/sas_expander.c allowed     local users to cause a denial of service (memory     consumption) via many read accesses to files in the     /sys/class/sas_phy directory, as demonstrated by the     /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file     (bnc#1084536).

  - CVE-2018-7566: There was a buffer overflow via an     SNDRV_SEQ_IOCTL_SET_CLIENT_POOL ioctl write operation to     /dev/snd/seq by a local user (bnc#1083483).

  - CVE-2017-0861: Use-after-free vulnerability in the     snd_pcm_info function in the ALSA subsystem allowed     attackers to gain privileges via unspecified vectors     (bnc#1088260).

  - CVE-2018-8822: Incorrect buffer length handling in the     ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c     could be exploited by malicious NCPFS servers to crash     the kernel or execute code (bnc#1086162).

  - CVE-2017-13166: An elevation of privilege vulnerability     in the kernel v4l2 video driver. (bnc#1072865).

  - CVE-2017-18203: The dm_get_from_kobject function in     drivers/md/dm.c allowed local users to cause a denial of     service (BUG) by leveraging a race condition with
    __dm_destroy during creation and removal of DM devices     (bnc#1083242).

  - CVE-2017-16911: The vhci_hcd driver allowed allows local     attackers to disclose kernel memory addresses.
    Successful exploitation requires that a USB device is     attached over IP (bnc#1078674).

  - CVE-2017-18208: The madvise_willneed function in     mm/madvise.c local users to cause a denial of service     (infinite loop) by triggering use of MADVISE_WILLNEED     for a DAX mapping (bnc#1083494).

  - CVE-2017-16644: The hdpvr_probe function in     drivers/media/usb/hdpvr/hdpvr-core.c allowed local users     to cause a denial of service (improper error handling     and system crash) or possibly have unspecified other     impact via a crafted USB device (bnc#1067118).

  - CVE-2018-6927: The futex_requeue function in     kernel/futex.c in the Linux kernel might allow attackers     to cause a denial of service (integer overflow) or     possibly have unspecified other impact by triggering a     negative wake or requeue value (bnc#1080757).

  - CVE-2017-16914: The 'stub_send_ret_submit()' function     (drivers/usb/usbip/stub_tx.c) allowed attackers to cause     a denial of service (NULL pointer dereference) via a     specially crafted USB over IP packet (bnc#1078669).

  - CVE-2016-7915: The hid_input_field function in     drivers/hid/hid-core.c allowed physically proximate     attackers to obtain sensitive information from kernel     memory or cause a denial of service (out-of-bounds read)     by connecting a device, as demonstrated by a Logitech DJ     receiver (bnc#1010470).

  - CVE-2015-5156: The virtnet_probe function in     drivers/net/virtio_net.c attempted to support a FRAGLIST     feature without proper memory allocation, which allowed     guest OS users to cause a denial of service (buffer     overflow and memory corruption) via a crafted sequence     of fragmented packets (bnc#940776).

  - CVE-2017-12190: The bio_map_user_iov and bio_unmap_user     functions in block/bio.c did unbalanced refcounting when     a SCSI I/O vector has small consecutive buffers     belonging to the same page. The bio_add_pc_page function     merges them into one, but the page reference is never     dropped. This causes a memory leak and possible system     lockup (exploitable against the host OS by a guest OS     user, if a SCSI disk is passed through to a virtual     machine) due to an out-of-memory condition     (bnc#1062568).

  - CVE-2017-16912: The 'get_pipe()' function     (drivers/usb/usbip/stub_rx.c) allowed attackers to cause     a denial of service (out-of-bounds read) via a specially     crafted USB over IP packet (bnc#1078673).

  - CVE-2017-16913: The 'stub_recv_cmd_submit()' function     (drivers/usb/usbip/stub_rx.c) when handling CMD_SUBMIT     packets allowed attackers to cause a denial of service     (arbitrary memory allocation) via a specially crafted     USB over IP packet (bnc#1078672).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.126 to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2018-1091: In the flush_tmregs_to_thread function in     arch/powerpc/kernel/ptrace.c, a guest kernel crash can     be triggered from unprivileged userspace during a core     dump on a POWER host due to a missing processor feature     check and an erroneous use of transactional memory (TM)     instructions in the core dump path, leading to a denial     of service (bnc#1087231).

  - CVE-2018-7740: The resv_map_release function in     mm/hugetlb.c allowed local users to cause a denial of     service (BUG) via a crafted application that made mmap     system calls and has a large pgoff argument to the     remap_file_pages system call (bnc#1084353).

  - CVE-2018-8043: The unimac_mdio_probe function in     drivers/net/phy/mdio-bcm-unimac.c did not validate     certain resource availability, which allowed local users     to cause a denial of service (NULL pointer dereference)     (bnc#1084829).

  - CVE-2017-18257: The __get_data_block function in     fs/f2fs/data.c allowed local users to cause a denial of     service (integer overflow and loop) via crafted use of     the open and fallocate system calls with an     FS_IOC_FIEMAP ioctl. (bnc#1088241)

  - CVE-2018-8822: Incorrect buffer length handling in the     ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c     could be exploited by malicious NCPFS servers to crash     the kernel or execute code (bnc#1086162).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
124800	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1476)	Nessus	Huawei Local Security Checks	high
121933	Photon OS 2.0: Linux PHSA-2018-2.0-0037-(a)	Nessus	PhotonOS Local Security Checks	high
121837	Photon OS 1.0: Linux PHSA-2018-1.0-0132	Nessus	PhotonOS Local Security Checks	high
118252	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:1173-2)	Nessus	SuSE Local Security Checks	high
110104	openSUSE Security Update : the Linux Kernel (openSUSE-2018-514) (Spectre)	Nessus	SuSE Local Security Checks	high
110052	Ubuntu 17.10 : Linux kernel (Raspberry Pi 2) vulnerabilities (USN-3657-1)	Nessus	Ubuntu Local Security Checks	high
110051	Ubuntu 16.04 LTS : Linux kernel (Raspberry Pi 2, Snapdragon) vulnerabilities (USN-3656-1)	Nessus	Ubuntu Local Security Checks	high
110050	Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3655-1)	Nessus	Ubuntu Local Security Checks	high
110049	Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3654-2)	Nessus	Ubuntu Local Security Checks	high
110048	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3654-1)	Nessus	Ubuntu Local Security Checks	high
110047	Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3653-2)	Nessus	Ubuntu Local Security Checks	high
110046	Ubuntu 17.10 : Linux kernel vulnerabilities (USN-3653-1) (Spectre)	Nessus	Ubuntu Local Security Checks	high
109758	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:1221-1)	Nessus	SuSE Local Security Checks	high
109757	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:1220-1)	Nessus	SuSE Local Security Checks	high
109647	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:1173-1)	Nessus	SuSE Local Security Checks	high
109646	SUSE SLES11 Security Update : kernel (SUSE-SU-2018:1172-1)	Nessus	SuSE Local Security Checks	high
109531	Debian DLA-1369-1 : linux security update (Spectre)	Nessus	Debian Local Security Checks	critical
109518	Debian DSA-4188-1 : linux - security update (Spectre)	Nessus	Debian Local Security Checks	high
109517	Debian DSA-4187-1 : linux - security update (Spectre)	Nessus	Debian Local Security Checks	critical
109360	SUSE SLES11 Security Update : kernel (SUSE-SU-2018:1080-1) (Spectre)	Nessus	SuSE Local Security Checks	high
109310	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:1048-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2018-8822

high

Tenable Plugins

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

critical

high

critical

high

high