Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering an out-of-array error case.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-2029 advisory.

  - arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which     makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests. (CVE-2018-15594)

  - An issue was discovered in the Linux kernel before 4.18.6. An information leak in cdrom_ioctl_drive_status     in drivers/cdrom/cdrom.c could be used by local attackers to read kernel memory because a cast from     unsigned long to int interferes with bounds checking. This is similar to CVE-2018-10940. (CVE-2018-16658)

  - drivers/infiniband/core/ucma.c in the Linux kernel through 4.17.11 allows ucma_leave_multicast to access a     certain data structure after a cleanup step in ucma_process_join, which allows attackers to cause a denial     of service (use-after-free). (CVE-2018-14734)

  - An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel     through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM     ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the     location of kernel code and data and bypass kernel security protections such as KASLR. (CVE-2018-7755)

  - An issue was discovered in fs/xfs/libxfs/xfs_attr_leaf.c in the Linux kernel through 4.17.3. An OOPS may     occur for a corrupted xfs image after xfs_da_shrink_inode() is called with a NULL bp. (CVE-2018-13094)

  - In the hidp_process_report in bluetooth, there is an integer overflow. This could lead to an out of bounds     write with no additional execution privileges needed. User interaction is not needed for exploitation.
    Product: Android Versions: Android kernel Android ID: A-65853588 References: Upstream kernel.
    (CVE-2018-9363)

  - In hid_debug_events_read of drivers/hid/hid-debug.c, there is a possible out of bounds write due to a     missing bounds check. This could lead to local escalation of privilege with System execution privileges     needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android     ID: A-71361580. (CVE-2018-9516)

  - The mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13 allowed local attackers     to observe page cache access patterns of other processes on the same system, potentially allowing sniffing     of secret information. (Fixing this affects the output of the fincore program.) Limited remote     exploitation may be possible, as demonstrated by latency differences in accessing public files from an     Apache HTTP Server. (CVE-2019-5489)

  - The alarm_timer_nsleep function in kernel/time/alarmtimer.c in the Linux kernel through 4.17.3 has an     integer overflow via a large relative timeout because ktime_add_safe is not used. (CVE-2018-13053)

  - The KVM implementation in the Linux kernel through 4.20.5 has an Information Leak. (CVE-2019-7222)

  - An issue was discovered in the Linux kernel before 5.0.7. A NULL pointer dereference can occur when     megasas_create_frame_pool() fails in megasas_alloc_cmds() in drivers/scsi/megaraid/megaraid_sas_base.c.
    This causes a Denial of Service, related to a use-after-free. (CVE-2019-11810)

  - A heap address information leak while using L2CAP_GET_CONF_OPT was discovered in the Linux kernel before     5.1-rc1. (CVE-2019-3459)

  - fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the     extent tree block, which might allow local users to obtain sensitive information by reading uninitialized     data in the filesystem. (CVE-2019-11833)

  - Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux     kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering     an out-of-array error case. (CVE-2018-8087)

  - In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local     escalation of privilege with System execution privileges needed. User interaction is not needed for     exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931. (CVE-2018-9517)

  - A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as     sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged     instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges     inside guest. (CVE-2018-10853)

  - An issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. There is a NULL pointer     dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted     xfs image. This occurs because of a lack of proper validation that cached inodes are free during     allocation. (CVE-2018-13093)

  - An issue was discovered in fs/xfs/libxfs/xfs_inode_buf.c in the Linux kernel through 4.17.3. A denial of     service (memory corruption and BUG) can occur for a corrupted xfs image upon encountering an inode that is     in extent format, but has more extents than fit in the inode fork. (CVE-2018-13095)

  - A flaw was found in the Linux Kernel where an attacker may be able to have an uncontrolled read to kernel-     memory from within a vm guest. A race condition between connect() and close() function may allow an     attacker using the AF_VSOCK protocol to gather a 4 byte information leak or possibly intercept or corrupt     AF_VSOCK messages destined to other clients. (CVE-2018-14625)

  - A flaw was found in the Linux kernel that allows the userspace to call memcpy_fromiovecend() and similar     functions with a zero offset and buffer length which causes the read beyond the buffer boundaries, in     certain cases causing a memory access fault and a system halt by accessing invalid memory address. This     issue only affects kernel version 3.10.x as shipped with Red Hat Enterprise Linux 7. (CVE-2018-16885)

  - Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks.
    If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of     mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it     has been released back to the page allocator and reused. This is fixed in the following kernel versions:
    4.9.135, 4.14.78, 4.18.16, 4.19. (CVE-2018-18281)

  - A heap data infoleak in multiple locations including L2CAP_PARSE_CONF_RSP was found in the Linux kernel     before 5.1-rc1. (CVE-2019-3460)

  - A flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's     locked memory limit. If a device is bound to a vfio driver, such as vfio-pci, and the local attacker is     administratively granted ownership of the device, it may cause a system memory exhaustion and thus a     denial of service (DoS). Versions 3.10, 4.14 and 4.18 are vulnerable. (CVE-2019-3882)

  - An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including     v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster     than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the     vhost_net kernel thread, resulting in a DoS scenario. (CVE-2019-3900)

  - The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to     prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive     information, cause a denial of service, or possibly have unspecified other impact by triggering a race     condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c,     fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c. (CVE-2019-11599)

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

The version of AOS installed on the remote host is prior to 5.16.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.16.0.1 advisory.

  - OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap overwrite issue. VMware has evaluated     the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.8.
    (CVE-2019-5544)

  - Empty or malformed p256-ECDH public keys may trigger a segmentation fault due values being improperly     sanitized before being copied into memory and used. This vulnerability affects Firefox ESR < 60.8, Firefox     < 68, and Thunderbird < 60.8. (CVE-2019-11729)

  - When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than the     block size, a small out of bounds write could occur. This could have caused heap corruption and a     potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and     Firefox < 71. (CVE-2019-11745)

  - An issue was discovered in the Linux kernel before 4.18.7. In block/blk-core.c, there is an
    __blk_drain_queue() use-after-free because a certain error case is mishandled. (CVE-2018-20856)

  - A flaw was found in the Linux kernel. A heap based buffer overflow in mwifiex_uap_parse_tail_ies function     in drivers/net/wireless/marvell/mwifiex/ie.c might lead to memory corruption and possibly other     consequences. (CVE-2019-10126)

  - A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the     mwifiex kernel module while connecting to a malicious wireless network. (CVE-2019-3846)

  - The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key     length and does not prevent an attacker from influencing the key length negotiation. This allows practical     brute-force attacks (aka KNOB) that can decrypt traffic and inject arbitrary ciphertext without the     victim noticing. (CVE-2019-9506)

  - An information disclosure vulnerability exists when certain central processing units (CPU) speculatively     access memory, aka 'Windows Kernel Information Disclosure Vulnerability'. This CVE ID is unique from     CVE-2019-1071, CVE-2019-1073. (CVE-2019-1125)

  - The Broadcom brcmfmac WiFi driver prior to commit 1b5e2423164b3670e8bc9174e4762d297990deff is vulnerable     to a heap buffer overflow. If the Wake-up on Wireless LAN functionality is configured, a malicious event     frame can be constructed to trigger an heap buffer overflow in the brcmf_wowl_nd_results function. This     vulnerability can be exploited with compromised chipsets to compromise the host, or when used in     combination with CVE-2019-9503, can be used remotely. In the worst case scenario, by sending specially-     crafted WiFi packets, a remote, unauthenticated attacker may be able to execute arbitrary code on a     vulnerable system. More typically, this vulnerability will result in denial-of-service conditions.
    (CVE-2019-9500)

  - Improper invalidation for page table updates by a virtual guest operating system for multiple Intel(R)     Processors may allow an authenticated user to potentially enable denial of service of the host system via     local access. (CVE-2018-12207)

  - Insufficient access control in subsystem for Intel (R) processor graphics in 6th, 7th, 8th and 9th     Generation Intel(R) Core(TM) Processor Families; Intel(R) Pentium(R) Processor J, N, Silver and Gold     Series; Intel(R) Celeron(R) Processor J, N, G3900 and G4900 Series; Intel(R) Atom(R) Processor A and E3900     Series; Intel(R) Xeon(R) Processor E3-1500 v5 and v6 and E-2100 Processor Families may allow an     authenticated user to potentially enable denial of service via local access. (CVE-2019-0154)

  - TSX Asynchronous Abort condition on some CPUs utilizing speculative execution may allow an authenticated     user to potentially enable information disclosure via a side channel with local access. (CVE-2019-11135)

  - A buffer overflow flaw was found, in versions from 2.6.34 to 5.2.x, in the way Linux kernel's vhost     functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A     privileged guest user able to pass descriptors with invalid length to the host when migration is underway,     could use this flaw to increase their privileges on the host. (CVE-2019-14835)

  - Insufficient access control in a subsystem for Intel (R) processor graphics in 6th, 7th, 8th and 9th     Generation Intel(R) Core(TM) Processor Families; Intel(R) Pentium(R) Processor J, N, Silver and Gold     Series; Intel(R) Celeron(R) Processor J, N, G3900 and G4900 Series; Intel(R) Atom(R) Processor A and E3900     Series; Intel(R) Xeon(R) Processor E3-1500 v5 and v6, E-2100 and E-2200 Processor Families; Intel(R)     Graphics Driver for Windows before 26.20.100.6813 (DCH) or 26.20.100.6812 and before 21.20.x.5077     (aka15.45.5077), i915 Linux Driver for Intel(R) Processor Graphics before versions 5.4-rc7, 5.3.11,     4.19.84, 4.14.154, 4.9.201, 4.4.201 may allow an authenticated user to potentially enable escalation of     privilege via local access. (CVE-2019-0155)

  - A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as     sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged     instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges     inside guest. (CVE-2018-10853)

  - The alarm_timer_nsleep function in kernel/time/alarmtimer.c in the Linux kernel through 4.17.3 has an     integer overflow via a large relative timeout because ktime_add_safe is not used. (CVE-2018-13053)

  - An issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. There is a NULL pointer     dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted     xfs image. This occurs because of a lack of proper validation that cached inodes are free during     allocation. (CVE-2018-13093)

  - An issue was discovered in fs/xfs/libxfs/xfs_attr_leaf.c in the Linux kernel through 4.17.3. An OOPS may     occur for a corrupted xfs image after xfs_da_shrink_inode() is called with a NULL bp. (CVE-2018-13094)

  - An issue was discovered in fs/xfs/libxfs/xfs_inode_buf.c in the Linux kernel through 4.17.3. A denial of     service (memory corruption and BUG) can occur for a corrupted xfs image upon encountering an inode that is     in extent format, but has more extents than fit in the inode fork. (CVE-2018-13095)

  - A flaw was found in the Linux Kernel where an attacker may be able to have an uncontrolled read to kernel-     memory from within a vm guest. A race condition between connect() and close() function may allow an     attacker using the AF_VSOCK protocol to gather a 4 byte information leak or possibly intercept or corrupt     AF_VSOCK messages destined to other clients. (CVE-2018-14625)

  - drivers/infiniband/core/ucma.c in the Linux kernel through 4.17.11 allows ucma_leave_multicast to access a     certain data structure after a cleanup step in ucma_process_join, which allows attackers to cause a denial     of service (use-after-free). (CVE-2018-14734)

  - arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which     makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests. (CVE-2018-15594)

  - An issue was discovered in the Linux kernel before 4.18.6. An information leak in cdrom_ioctl_drive_status     in drivers/cdrom/cdrom.c could be used by local attackers to read kernel memory because a cast from     unsigned long to int interferes with bounds checking. This is similar to CVE-2018-10940. (CVE-2018-16658)

  - A flaw was found in the Linux kernel that allows the userspace to call memcpy_fromiovecend() and similar     functions with a zero offset and buffer length which causes the read beyond the buffer boundaries, in     certain cases causing a memory access fault and a system halt by accessing invalid memory address. This     issue only affects kernel version 3.10.x as shipped with Red Hat Enterprise Linux 7. (CVE-2018-16885)

  - Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks.
    If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of     mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it     has been released back to the page allocator and reused. This is fixed in the following kernel versions:
    4.9.135, 4.14.78, 4.18.16, 4.19. (CVE-2018-18281)

  - An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel     through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM     ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the     location of kernel code and data and bypass kernel security protections such as KASLR. (CVE-2018-7755)

  - Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux     kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering     an out-of-array error case. (CVE-2018-8087)

  - In the hidp_process_report in bluetooth, there is an integer overflow. This could lead to an out of bounds     write with no additional execution privileges needed. User interaction is not needed for exploitation.
    Product: Android Versions: Android kernel Android ID: A-65853588 References: Upstream kernel.
    (CVE-2018-9363)

  - In hid_debug_events_read of drivers/hid/hid-debug.c, there is a possible out of bounds write due to a     missing bounds check. This could lead to local escalation of privilege with System execution privileges     needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android     ID: A-71361580. (CVE-2018-9516)

  - In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local     escalation of privilege with System execution privileges needed. User interaction is not needed for     exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931. (CVE-2018-9517)

  - The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to     prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive     information, cause a denial of service, or possibly have unspecified other impact by triggering a race     condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c,     fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c. (CVE-2019-11599)

  - An issue was discovered in the Linux kernel before 5.0.7. A NULL pointer dereference can occur when     megasas_create_frame_pool() fails in megasas_alloc_cmds() in drivers/scsi/megaraid/megaraid_sas_base.c.
    This causes a Denial of Service, related to a use-after-free. (CVE-2019-11810)

  - fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the     extent tree block, which might allow local users to obtain sensitive information by reading uninitialized     data in the filesystem. (CVE-2019-11833)

  - A heap address information leak while using L2CAP_GET_CONF_OPT was discovered in the Linux kernel before     5.1-rc1. (CVE-2019-3459)

  - A heap data infoleak in multiple locations including L2CAP_PARSE_CONF_RSP was found in the Linux kernel     before 5.1-rc1. (CVE-2019-3460)

  - A flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's     locked memory limit. If a device is bound to a vfio driver, such as vfio-pci, and the local attacker is     administratively granted ownership of the device, it may cause a system memory exhaustion and thus a     denial of service (DoS). Versions 3.10, 4.14 and 4.18 are vulnerable. (CVE-2019-3882)

  - An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including     v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster     than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the     vhost_net kernel thread, resulting in a DoS scenario. (CVE-2019-3900)

  - The mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13 allowed local attackers     to observe page cache access patterns of other processes on the same system, potentially allowing sniffing     of secret information. (Fixing this affects the output of the fincore program.) Limited remote     exploitation may be possible, as demonstrated by latency differences in accessing public files from an     Apache HTTP Server. (CVE-2019-5489)

  - The KVM implementation in the Linux kernel through 4.20.5 has an Information Leak. (CVE-2019-7222)

  - A buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of GNU     FriBidi through 1.0.7 allows an attacker to cause a denial of service or possibly execute arbitrary code     by delivering crafted text content to a user, when this content is then rendered by an application that     uses FriBidi for text layout calculations. Examples include any GNOME or GTK+ based application that uses     Pango for text layout, as this internally uses FriBidi for bidirectional text layout. For example, the     attacker can construct a crafted text file to be opened in GEdit, or a crafted IRC message to be viewed in     HexChat. (CVE-2019-18397)

  - An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux     kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer     'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be     supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm'     device could use this flaw to crash the host kernel, resulting in a denial of service or potentially     escalating privileges on the system. (CVE-2019-14821)

  - In the Linux kernel, a certain net/ipv4/tcp_output.c change, which was properly incorporated into 4.16.12,     was incorrectly backported to the earlier longterm kernels, introducing a new vulnerability that was     potentially more severe than the issue that was intended to be fixed by backporting. Specifically, by     adding to a write queue between disconnection and re-connection, a local attacker can trigger multiple     use-after-free conditions. This can result in a kernel crash, or potentially in privilege escalation.
    NOTE: this affects (for example) Linux distributions that use 4.9.x longterm kernels before 4.9.190 or     4.14.x longterm kernels before 4.14.139. (CVE-2019-15239)

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

An update for kernel is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es) :

* Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

* Kernel: page cache side channel attacks (CVE-2019-5489)

* kernel: Buffer overflow in hidp_process_report (CVE-2018-9363)

* kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create() (CVE-2018-9517)

* kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853)

* kernel: use-after-free Read in vhost_transport_send_pkt (CVE-2018-14625)

* kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ ucma.c (CVE-2018-14734)

* kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests (CVE-2018-15594)

* kernel: TLB flush happens too late on mremap (CVE-2018-18281)

* kernel: Heap address information leak while using L2CAP_GET_CONF_OPT (CVE-2019-3459)

* kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

* kernel: denial of service vector through vfio DMA mappings (CVE-2019-3882)

* kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)

* kernel: a NULL pointer dereference in drivers/scsi/megaraid/ megaraid_sas_base.c leading to DoS (CVE-2019-11810)

* kernel: fs/ext4/extents.c leads to information disclosure (CVE-2019-11833)

* kernel: Information exposure in fd_locked_ioctl function in drivers/block/ floppy.c (CVE-2018-7755)

* kernel: Memory leak in drivers/net/wireless/ mac80211_hwsim.c:hwsim_new_radio_nl() can lead to potential denial of service (CVE-2018-8087)

* kernel: HID: debug: Buffer overflow in hid_debug_events_read() in drivers/ hid/hid-debug.c (CVE-2018-9516)

* kernel: Integer overflow in the alarm_timer_nsleep function (CVE-2018-13053)

* kernel: NULL pointer dereference in lookup_slow function (CVE-2018-13093)

* kernel: NULL pointer dereference in xfs_da_shrink_inode function (CVE-2018-13094)

* kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)

* kernel: Information leak in cdrom_ioctl_drive_status (CVE-2018-16658)

* kernel: out-of-bound read in memcpy_fromiovecend() (CVE-2018-16885)

* Kernel: KVM: leak of uninitialized stack contents to guest (CVE-2019-7222)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

Security Fix(es) :

  - Kernel: vhost_net: infinite loop while receiving packets     leads to DoS (CVE-2019-3900)

  - Kernel: page cache side channel attacks (CVE-2019-5489)

  - kernel: Buffer overflow in hidp_process_report     (CVE-2018-9363)

  - kernel: l2tp: Race condition between     pppol2tp_session_create() and l2tp_eth_create()     (CVE-2018-9517)

  - kernel: kvm: guest userspace to guest kernel write     (CVE-2018-10853)

  - kernel: use-after-free Read in vhost_transport_send_pkt     (CVE-2018-14625)

  - kernel: use-after-free in ucma_leave_multicast in     drivers/infiniband/core/ucma.c (CVE-2018-14734)

  - kernel: Mishandling of indirect calls weakens Spectre     mitigation for paravirtual guests (CVE-2018-15594)

  - kernel: TLB flush happens too late on mremap     (CVE-2018-18281)

  - kernel: Heap address information leak while using     L2CAP_GET_CONF_OPT (CVE-2019-3459)

  - kernel: Heap address information leak while using     L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

  - kernel: denial of service vector through vfio DMA     mappings (CVE-2019-3882)

  - kernel: fix race condition between     mmget_not_zero()/get_task_mm() and core dumping     (CVE-2019-11599)

  - kernel: a NULL pointer dereference in     drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS     (CVE-2019-11810)

  - kernel: fs/ext4/extents.c leads to information     disclosure (CVE-2019-11833)

  - kernel: Information exposure in fd_locked_ioctl function     in drivers/block/floppy.c (CVE-2018-7755)

  - kernel: Memory leak in     drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl     () can lead to potential denial of service     (CVE-2018-8087)

  - kernel: HID: debug: Buffer overflow in     hid_debug_events_read() in drivers/hid/hid-debug.c     (CVE-2018-9516)

  - kernel: Integer overflow in the alarm_timer_nsleep     function (CVE-2018-13053)

  - kernel: NULL pointer dereference in lookup_slow function     (CVE-2018-13093)

  - kernel: NULL pointer dereference in xfs_da_shrink_inode     function (CVE-2018-13094)

  - kernel: NULL pointer dereference in     fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)

  - kernel: Information leak in cdrom_ioctl_drive_status     (CVE-2018-16658)

  - kernel: out-of-bound read in memcpy_fromiovecend()     (CVE-2018-16885)

  - Kernel: KVM: leak of uninitialized stack contents to     guest (CVE-2019-7222)

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es) :

* Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

* Kernel: page cache side channel attacks (CVE-2019-5489)

* kernel: Buffer overflow in hidp_process_report (CVE-2018-9363)

* kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create() (CVE-2018-9517)

* kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853)

* kernel: use-after-free Read in vhost_transport_send_pkt (CVE-2018-14625)

* kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ ucma.c (CVE-2018-14734)

* kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests (CVE-2018-15594)

* kernel: TLB flush happens too late on mremap (CVE-2018-18281)

* kernel: Heap address information leak while using L2CAP_GET_CONF_OPT (CVE-2019-3459)

* kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

* kernel: denial of service vector through vfio DMA mappings (CVE-2019-3882)

* kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)

* kernel: a NULL pointer dereference in drivers/scsi/megaraid/ megaraid_sas_base.c leading to DoS (CVE-2019-11810)

* kernel: fs/ext4/extents.c leads to information disclosure (CVE-2019-11833)

* kernel: Information exposure in fd_locked_ioctl function in drivers/block/ floppy.c (CVE-2018-7755)

* kernel: Memory leak in drivers/net/wireless/ mac80211_hwsim.c:hwsim_new_radio_nl() can lead to potential denial of service (CVE-2018-8087)

* kernel: HID: debug: Buffer overflow in hid_debug_events_read() in drivers/ hid/hid-debug.c (CVE-2018-9516)

* kernel: Integer overflow in the alarm_timer_nsleep function (CVE-2018-13053)

* kernel: NULL pointer dereference in lookup_slow function (CVE-2018-13093)

* kernel: NULL pointer dereference in xfs_da_shrink_inode function (CVE-2018-13094)

* kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)

* kernel: Information leak in cdrom_ioctl_drive_status (CVE-2018-16658)

* kernel: out-of-bound read in memcpy_fromiovecend() (CVE-2018-16885)

* Kernel: KVM: leak of uninitialized stack contents to guest (CVE-2019-7222)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

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 :

  - The kernel package contains the Linux kernel (vmlinuz),     the core of any Linux operating system. The kernel     handles the basic functions of the operating system:
    memory allocation, process allocation, device input and     output, etc.Security Fix(es):A buffer overflow was     discovered in tpacket_rcv() function in the Linux     kernel since v4.6-rc1 through v4.13. A number of     socket-related syscalls can be made to set up a     configuration when each packet received by a network     interface can cause writing up to 10 bytes to a kernel     memory outside of a kernel buffer. This can cause     unspecified kernel data corruption effects, including     damage of in-memory and on-disk XFS     data.(CVE-2017-14497)The qmi_wwan_bind function in     driverset/usb/qmi_wwan.c in the Linux kernel through     4.13.11 allows local users to cause a denial of service     (divide-by-zero error and system crash) or possibly     have unspecified other impact via a crafted USB     device.(CVE-2017-16650)A race condition flaw was found     in the way the Linux kernel's SCTP implementation     handled sctp_accept() during the processing of     heartbeat timeout events. A remote attacker could use     this flaw to prevent further connections to be accepted     by the SCTP server running on the system, resulting in     a denial of service.(CVE-2015-8767)A race condition     flaw was found in the way the Linux kernel's KVM     subsystem handled PIT (Programmable Interval Timer)     emulation. A guest user who has access to the PIT I/O     ports could use this flaw to crash the     host.(CVE-2014-3611)The Linux kernel is vulnerable to a     memory leak in the     driverset/wireless/mac80211_hwsim.c:hwsim_new_radio_nl(     ) function. An attacker could exploit this to cause a     potential denial of service.(CVE-2018-8087)An integer     underflow flaw was found in the way the Linux kernel's     Stream Control Transmission Protocol (SCTP)     implementation processed certain COOKIE_ECHO packets.
    By sending a specially crafted SCTP packet, a remote     attacker could use this flaw to prevent legitimate     connections to a particular SCTP server socket to be     made.(CVE-2014-4667)The cx231xx_usb_probe function in     drivers/media/usb/cx231xx/cx231xx-cards.c in the Linux     kernel through 4.13.11 allows local users to cause a     denial of service (NULL pointer dereference and system     crash) or possibly have unspecified other impact via a     crafted USB device.(CVE-2017-16536)The     snd_usb_create_streams function in sound/usb/card.c in     the Linux kernel, before 4.13.6, allows local users to     cause a denial of service (out-of-bounds read and     system crash) or possibly have unspecified other impact     via a crafted USB device.(CVE-2017-16529)A flaw was     found in the Linux kernel's random number generator     API. A null pointer dereference in the rngapi_reset     function may result in denial of service, crashing the     system.(CVE-2017-15116)The __netlink_deliver_tap_skb     function in netetlink/af_netlink.c in the Linux kernel,     through 4.14.4, does not restrict observations of     Netlink messages to a single net namespace, when     CONFIG_NLMON is enabled. This 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)arch/arm64/kernel/perf_event.c     in the Linux kernel before 4.1 on arm64 platforms     allows local users to gain privileges or cause a denial     of service (invalid pointer dereference) via vectors     involving events that are mishandled during a span of     multiple HW PMUs.(CVE-2015-8955)The aac_compat_ioctl     function in drivers/scsi/aacraid/linit.c in the Linux     kernel before 3.11.8 does not require the CAP_SYS_RAWIO     capability, which allows local users to bypass intended     access restrictions via a crafted ioctl     call.(CVE-2013-6383)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)The Linux kernel is vulerable to a     use-after-free flaw when Transformation User     configuration interface(CONFIG_XFRM_USER) compile-time     configuration were enabled. This vulnerability occurs     while closing a xfrm netlink socket in     xfrm_dump_policy_done. A user/process could abuse this     flaw to potentially escalate their privileges on a     system.(CVE-2017-16939)A vulnerability was found in the     Linux kernel in function rds_inc_info_copy of file     net/rds/recv.c. The last field 'flags' of object     'minfo' is not initialized. This can leak data     previously at the flags location to     userspace.(CVE-2016-5244)A flaw was found in the     kernel's ACPI interpreter when it does not flush the     operand cache and causes a kernel stack dump. This     allows local users to obtain sensitive information from     kernel memory and bypass the KASLR protection     mechanism.(CVE-2017-13693)It was found that     kernel/events/core.c in the Linux kernel mishandles     counter grouping, which allows local users to gain     privileges via a crafted application, related to the     perf_pmu_register and perf_event_open     functions.(CVE-2015-9004)The xfs_bmap_extents_to_btree     function in fs/xfs/libxfs/xfs_bmap.c in the Linux     kernel through 4.16.3 allows local users to cause a     denial of service (xfs_bmapi_write NULL pointer     dereference) via a crafted xfs     image.(CVE-2018-10323)The lrw_crypt() function in     'crypto/lrw.c' in the Linux kernel before 4.5 allows     local users to cause a system crash and a denial of     service by the NULL pointer dereference via accept(2)     system call for AF_ALG socket without calling setkey()     first to set a cipher key.(CVE-2015-8970)The IPv6     fragmentation implementation in the Linux kernel does     not consider that the nexthdr field may be associated     with an invalid option, which allows local users to     cause a denial of service (out-of-bounds read and BUG)     or possibly have unspecified other impact via crafted     socket and send system calls. Due to the nature of the     flaw, privilege escalation cannot be fully ruled out,     although we believe it is unlikely.(CVE-2017-9074)

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 remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3678-4 advisory.

  - drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial     of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the     relevance of this report because the failure can only occur for physically proximate attackers who unplug     SAS Host Bus Adapter cables (CVE-2018-10021)

  - The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a     root directory with a zero i_links_count, which allows attackers to cause a denial of service     (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image. (CVE-2018-1092)

  - Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux     kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering     an out-of-array error case. (CVE-2018-8087)

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 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3678-3 advisory.

  - drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial     of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the     relevance of this report because the failure can only occur for physically proximate attackers who unplug     SAS Host Bus Adapter cables (CVE-2018-10021)

  - The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a     root directory with a zero i_links_count, which allows attackers to cause a denial of service     (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image. (CVE-2018-1092)

  - Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux     kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering     an out-of-array error case. (CVE-2018-8087)

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-3678-2 advisory.

  - drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial     of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the     relevance of this report because the failure can only occur for physically proximate attackers who unplug     SAS Host Bus Adapter cables (CVE-2018-10021)

  - The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a     root directory with a zero i_links_count, which allows attackers to cause a denial of service     (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image. (CVE-2018-1092)

  - Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux     kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering     an out-of-array error case. (CVE-2018-8087)

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 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3678-1 advisory.

  - drivers/scsi/libsas/sas_scsi_host.c in the Linux kernel before 4.16 allows local users to cause a denial     of service (ata qc leak) by triggering certain failure conditions. NOTE: a third party disputes the     relevance of this report because the failure can only occur for physically proximate attackers who unplug     SAS Host Bus Adapter cables (CVE-2018-10021)

  - The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a     root directory with a zero i_links_count, which allows attackers to cause a denial of service     (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image. (CVE-2018-1092)

  - Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux     kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering     an out-of-array error case. (CVE-2018-8087)

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-3677-2 advisory.

  - 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)

  - The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a     root directory with a zero i_links_count, which allows attackers to cause a denial of service     (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image. (CVE-2018-1092)

  - A NULL pointer dereference was found in the net/rds/rdma.c __rds_rdma_map() function in the Linux kernel     before 4.14.7 allowing local attackers to cause a system panic and a denial-of-service, related to     RDS_GET_MR and RDS_GET_MR_FOR_DEST. (CVE-2018-7492)

  - Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux     kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering     an out-of-array error case. (CVE-2018-8087)

  - 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)

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

It was discovered that the netfilter subsystem of the Linux kernel did not properly validate ebtables offsets. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1068)

Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations.
An attacker could use this to specially craft an ext4 file system that caused a denial of service (system crash) when mounted.
(CVE-2018-1092)

It was discovered that a NULL pointer dereference existed in the RDS (Reliable Datagram Sockets) protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-7492)

It was discovered that the 802.11 software simulator implementation in the Linux kernel contained a memory leak when handling certain error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2018-8087)

Eyal Itkin discovered that the USB displaylink video adapter driver in the Linux kernel did not properly validate mmap offsets sent from userspace. A local attacker could use this to expose sensitive information (kernel memory) or possibly execute arbitrary code.
(CVE-2018-8781).

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 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3676-2 advisory.

  - The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a     root directory with a zero i_links_count, which allows attackers to cause a denial of service     (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image. (CVE-2018-1092)

  - The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows     attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image     because balloc.c and ialloc.c do not validate bitmap block numbers. (CVE-2018-1093)

  - The cdrom_ioctl_media_changed function in drivers/cdrom/cdrom.c in the Linux kernel before 4.16.6 allows     local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out     kernel memory. (CVE-2018-10940)

  - Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux     kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering     an out-of-array error case. (CVE-2018-8087)

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-3676-1 advisory.

  - The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a     root directory with a zero i_links_count, which allows attackers to cause a denial of service     (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image. (CVE-2018-1092)

  - The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows     attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image     because balloc.c and ialloc.c do not validate bitmap block numbers. (CVE-2018-1093)

  - The cdrom_ioctl_media_changed function in drivers/cdrom/cdrom.c in the Linux kernel before 4.16.6 allows     local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out     kernel memory. (CVE-2018-10940)

  - Memory leak in the hwsim_new_radio_nl function in drivers/net/wireless/mac80211_hwsim.c in the Linux     kernel through 4.15.9 allows local users to cause a denial of service (memory consumption) by triggering     an out-of-array error case. (CVE-2018-8087)

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

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.

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.120 to receive various security and bugfixes. The following security bugs were fixed :

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

  - CVE-2017-15951: The KEYS subsystem did not correctly     synchronize the actions of updating versus finding a key     in the 'negative' state to avoid a race condition, which     allowed local users to cause a denial of service or     possibly have unspecified other impact via crafted     system calls (bnc#1062840 bnc#1065615).

  - 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-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).

  - CVE-2017-17975: Use-after-free in the usbtv_probe     function in drivers/media/usb/usbtv/usbtv-core.c allowed     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 (bnc#1074426).

  - CVE-2017-18174: The amd_gpio_remove function in     drivers/pinctrl/pinctrl-amd.c calls the     pinctrl_unregister function, leading to a double free     (bnc#1080533).

  - 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-2018-1000026: A insufficient input validation     vulnerability in bnx2x network card driver could result     in DoS: Network card firmware assertion takes card     off-line. This attack appear to be exploitable via An     attacker on a must pass a very large, specially crafted     packet to the bnx2x card. This can be done from an     untrusted guest VM. (bnc#1079384).

  - CVE-2018-8087: Memory leak in the hwsim_new_radio_nl     function in drivers/net/wireless/mac80211_hwsim.c     allowed local users to cause a denial of service (memory     consumption) by triggering an out-of-array error case     (bnc#1085053).

  - CVE-2018-1068: Insufficient user provided offset     checking in the ebtables compat code allowed local     attackers to overwrite kernel memory and potentially     execute code. (bsc#1085107)

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 kernel was updated to 4.4.120 to receive various security and bugfixes. The following security bugs were fixed :

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

  - CVE-2017-15951: The KEYS subsystem did not correctly     synchronize the actions of updating versus finding a key     in the 'negative' state to avoid a race condition, which     allowed local users to cause a denial of service or     possibly have unspecified other impact via crafted     system calls (bnc#1062840 bnc#1065615).

  - 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-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).

  - CVE-2017-17975: Use-after-free in the usbtv_probe     function in drivers/media/usb/usbtv/usbtv-core.c allowed     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 (bnc#1074426).

  - 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-2018-8087: Memory leak in the hwsim_new_radio_nl     function in drivers/net/wireless/mac80211_hwsim.c     allowed local users to cause a denial of service (memory     consumption) by triggering an out-of-array error case     (bnc#1085053).

  - CVE-2018-1000026: A insufficient input validation     vulnerability in the bnx2x network card driver could     result in DoS: Network card firmware assertion takes     card off-line. This attack appear to be exploitable via     An attacker on a must pass a very large, specially     crafted packet to the bnx2x card. This can be done from     an untrusted guest VM. (bnc#1079384).

  - CVE-2018-1068: Insufficient user provided offset     checking in the ebtables compat code allowed local     attackers to overwrite kernel memory and potentially     execute code. (bsc#1085107)

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 4.15.10 update contains a number of important fixes across the tree.

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

ID	Name	Product	Family	Severity
180763	Oracle Linux 7 : kernel (ELSA-2019-2029)	Nessus	Oracle Linux Local Security Checks	high
164695	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.16.1)	Nessus	Misc.	critical
164602	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.11.3)	Nessus	Misc.	critical
164593	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.16.0.1)	Nessus	Misc.	critical
164561	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.17)	Nessus	Misc.	critical
128651	CentOS 7 : kernel (CESA-2019:2029)	Nessus	CentOS Local Security Checks	high
128226	Scientific Linux Security Update : kernel on SL7.x x86_64 (20190806)	Nessus	Scientific Linux Local Security Checks	high
127655	RHEL 7 : kernel-rt (RHSA-2019:2043)	Nessus	Red Hat Local Security Checks	high
127650	RHEL 7 : kernel (RHSA-2019:2029)	Nessus	Red Hat Local Security Checks	high
124990	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1537)	Nessus	Huawei Local Security Checks	high
121841	Photon OS 1.0: Linux PHSA-2018-1.0-0135	Nessus	PhotonOS Local Security Checks	medium
110550	Ubuntu 18.04 LTS : Linux kernel (Raspberry Pi 2) vulnerabilities (USN-3678-4)	Nessus	Ubuntu Local Security Checks	medium
110513	Ubuntu 18.04 LTS : Linux kernel (Azure) vulnerabilities (USN-3678-3)	Nessus	Ubuntu Local Security Checks	medium
110481	Ubuntu 16.04 LTS : Linux kernel (Azure) vulnerabilities (USN-3678-2)	Nessus	Ubuntu Local Security Checks	medium
110480	Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-3678-1)	Nessus	Ubuntu Local Security Checks	medium
110479	Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3677-2)	Nessus	Ubuntu Local Security Checks	high
110478	Ubuntu 17.10 : Linux kernel vulnerabilities (USN-3677-1)	Nessus	Ubuntu Local Security Checks	high
110477	Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3676-2)	Nessus	Ubuntu Local Security Checks	medium
110476	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3676-1)	Nessus	Ubuntu Local Security Checks	medium
109518	Debian DSA-4188-1 : linux - security update (Spectre)	Nessus	Debian Local Security Checks	high
108649	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:0786-1)	Nessus	SuSE Local Security Checks	critical
108648	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:0785-1)	Nessus	SuSE Local Security Checks	high
108577	openSUSE Security Update : the Linux Kernel (openSUSE-2018-292)	Nessus	SuSE Local Security Checks	critical
108505	Fedora 27 : kernel (2018-959aac67a3)	Nessus	Fedora Local Security Checks	medium
108495	Fedora 26 : kernel (2018-296bf0c332)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2018-8087

medium

Tenable Plugins

high

critical

critical

critical

critical

high

high

high

high

high

medium

medium

medium

medium

medium

high

high

medium

medium

high

critical

high

critical

medium

medium