An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc rb_trees when reloc control has not been initialized.

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

  - In do_epoll_ctl and ep_loop_check_proc of eventpoll.c,     there is a possible use after free due to a logic     error. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for     exploitation.(CVE-2020-0466)

  - fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8,     when there is an NFS export of a subdirectory of a     filesystem, allows remote attackers to traverse to     other parts of the filesystem via READDIRPLUS. NOTE:
    some parties argue that such a subdirectory export is     not intended to prevent this attack see also the     exports(5) no_subtree_check default     behavior.(CVE-2021-3178)

  - An issue was discovered in the Linux kernel through     5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an     iSCSI transport is registered with the iSCSI subsystem,     the transport's handle is available to unprivileged     users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When     read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which     leaks the handle. This handle is actually the pointer     to an iscsi_transport struct in the kernel module's     global variables.(CVE-2021-27363)

  - An issue was discovered in the Linux kernel through     5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged     user to craft Netlink messages.(CVE-2021-27364)

  - A race condition was found in the Linux kernels     implementation of the floppy disk drive controller     driver software. The impact of this issue is lessened     by the fact that the default permissions on the floppy     device (/dev/fd0) are restricted to root. If the     permissions on the device have changed the impact     changes greatly. In the default configuration root (or     equivalent) permissions are required to attack this     flaw.(CVE-2021-20261)

  - In fs/ocfs2/cluster/nodemanager.c in the Linux kernel     before 4.15, local users can cause a denial of service     (NULL pointer dereference and BUG) because a required     mutex is not used.(CVE-2017-18216)

  - The omninet_open function in     drivers/usb/serial/omninet.c in the Linux kernel before     4.10.4 allows local users to cause a denial of service     (tty exhaustion) by leveraging reference count     mishandling.(CVE-2017-8925)

  - A flaw was found in the way memory resources were freed     in the unix_stream_recvmsg function in the Linux kernel     when a signal was pending. This flaw allows an     unprivileged local user to crash the system by     exhausting available memory. The highest threat from     this vulnerability is to system     availability.(CVE-2021-20265)

  - A flaw was found in the JFS filesystem code in the     Linux Kernel which allows a local attacker with the     ability to set extended attributes to panic the system,     causing memory corruption or escalating privileges. The     highest threat from this vulnerability is to     confidentiality, integrity, as well as system     availability.(CVE-2020-27815)

  - An out-of-bounds (OOB) memory access flaw was found in     x25_bind in net/x25/af_x25.c in the Linux kernel     version v5.12-rc5. A bounds check failure allows a     local attacker with a user account on the system to     gain access to out-of-bounds memory, leading to a     system crash or a leak of internal kernel information.
    The highest threat from this vulnerability is to     confidentiality, integrity, as well as system     availability.(CVE-2020-35519)

  - There is a flaw reported in the Linux kernel in     versions before 5.9 in     drivers/gpu/drm/nouveau/nouveau_sgdma.c in     nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The     issue results from the lack of validating the existence     of an object prior to performing operations on the     object. An attacker with a local account with a root     privilege, can leverage this vulnerability to escalate     privileges and execute code in the context of the     kernel.(CVE-2021-20292)

  - In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux     kernel through 5.11.8, the RPA PCI Hotplug driver has a     user-tolerable buffer overflow when writing a new     device name to the driver from userspace, allowing     userspace to write data to the kernel stack frame     directly. This occurs because add_slot_store and     remove_slot_store mishandle drc_name '\0' termination,     aka CID-cc7a0bb058b8.(CVE-2021-28972)

  - A race condition was discovered in get_old_root in     fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It     allows attackers to cause a denial of service (BUG)     because of a lack of locking on an extent buffer before     a cloning operation, aka     CID-dbcc7d57bffc.(CVE-2021-28964)

  - An issue was discovered in the Linux kernel before     5.11.7. usbip_sockfd_store in     drivers/usb/usbip/stub_dev.c allows attackers to cause     a denial of service (GPF) because the stub-up sequence     has race conditions during an update of the local and     shared status, aka CID-9380afd6df70.(CVE-2021-29265)

  - BPF JIT compilers in the Linux kernel through 5.11.12     have incorrect computation of branch displacements,     allowing them to execute arbitrary code within the     kernel context. This affects     arch/x86/net/bpf_jit_comp.c and     arch/x86/net/bpf_jit_comp32.c.(CVE-2021-29154)

  - The KVM implementation in the Linux kernel through     4.14.7 allows attackers to obtain potentially sensitive     information from kernel memory, aka a write_mmio     stack-based out-of-bounds read, related to     arch/x86/kvm/x86.c and     include/trace/events/kvm.h.(CVE-2017-17741)

  - An issue was discovered in the Linux kernel before     5.11.3 when a webcam device exists. video_usercopy in     drivers/media/v4l2-core/v4l2-ioctl.c has a memory leak     for large arguments, aka     CID-fb18802a338b.(CVE-2021-30002)

  - An issue was discovered in the Linux kernel through     4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when     mounting a crafted btrfs image, related to removing     reloc rb_trees when reloc control has not been     initialized.(CVE-2018-14609)

  - 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)

  - The vmw_gb_surface_define_ioctl function in     drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux     kernel through 4.10.7 does not validate certain levels     data, which allows local users to cause a denial of     service (system hang) via a crafted ioctl call for a     /dev/dri/renderD* device.(CVE-2017-7346)

  - The klsi_105_get_line_state function in     drivers/usb/serial/kl5kusb105.c in the Linux kernel     before 4.9.5 places uninitialized heap-memory contents     into a log entry upon a failure to read the line     status, which allows local users to obtain sensitive     information by reading the log.(CVE-2017-5549)

  - An integer overflow in the uvesafb_setcmap function in     drivers/video/fbdev/uvesafb.c in the Linux kernel     before 4.17.4 could result in local attackers being     able to crash the kernel or potentially elevate     privileges because kmalloc_array is not     used.(CVE-2018-13406)

  - In the Linux kernel before version 4.12, Kerberos 5     tickets decoded when using the RXRPC keys incorrectly     assumes the size of a field. This could lead to the     size-remaining variable wrapping and the data pointer     going over the end of the buffer. This could possibly     lead to memory corruption and possible privilege     escalation.(CVE-2017-7482)

  - drivers/net/usb/rtl8150.c in the Linux kernel 4.9.x     before 4.9.11 interacts incorrectly with the     CONFIG_VMAP_STACK option, which allows local users to     cause a denial of service (system crash or memory     corruption) or possibly have unspecified other impact     by leveraging use of more than one virtual page for a     DMA scatterlist.(CVE-2017-8069)

  - An issue was discovered in the Linux kernel through     5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can     exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI,     and has a length up to the maximum length of a Netlink     message.(CVE-2021-27365)

  - A flaw was found in the Nosy driver in the Linux     kernel. This issue allows a device to be inserted twice     into a doubly-linked list, leading to a use-after-free     when one of these devices is removed. The highest     threat from this vulnerability is to confidentiality,     integrity, as well as system availability. Versions     before kernel 5.12-rc6 are affected(CVE-2021-3483)

  - An issue was discovered in the FUSE filesystem     implementation in the Linux kernel before 5.10.6, aka     CID-5d069dbe8aaf. fuse_do_getattr() calls     make_bad_inode() in inappropriate situations, causing a     system crash. NOTE: the original fix for this     vulnerability was incomplete, and its incompleteness is     tracked as CVE-2021-28950.(CVE-2020-36322)

  - An out-of-bounds (OOB) memory write flaw was found in     list_devices in drivers/md/dm-ioctl.c in the     Multi-device driver module in the Linux kernel before     5.12. A bound check failure allows an attacker with     special user (CAP_SYS_ADMIN) privilege to gain access     to out-of-bounds memory leading to a system crash or a     leak of internal kernel information. The highest threat     from this vulnerability is to system     availability.(CVE-2021-31916)

  - A vulnerability was found in Linux Kernel, where a     refcount leak in llcp_sock_connect() causing     use-after-free which might lead to privilege     escalations.(CVE-2020-25671)

  - A vulnerability was found in Linux Kernel where     refcount leak in llcp_sock_bind() causing     use-after-free which might lead to privilege     escalations.(CVE-2020-25670)

  - A memory leak vulnerability was found in Linux kernel     in llcp_sock_connect(CVE-2020-25672)

  - The Linux kernel before 5.11.14 has a use-after-free in     cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the     CIPSO and CALIPSO refcounting for the DOI definitions     is mishandled, aka CID-ad5d07f4a9cd. This leads to     writing an arbitrary value.(CVE-2021-33033)

  - Use After Free vulnerability in nfc sockets in the     Linux Kernel before 5.12.4 allows local attackers to     elevate their privileges. In typical configurations,     the issue can only be triggered by a privileged local     user with the CAP_NET_RAW capability.(CVE-2021-23134)

  - A flaw use-after-free in function     hci_sock_bound_ioctl() of the Linux kernel HCI     subsystem was found in the way user detaches bluetooth     dongle or other way triggers unregister bluetooth     device event. A local user could use this flaw to crash     the system or escalate their privileges on the     system.(CVE-2021-3573)

  - An issue was discovered in the Linux kernel through     5.10.11. PI futexes have a kernel stack use-after-free     during fault handling, allowing local users to execute     code in the kernel, aka     CID-34b1a1ce1458.(CVE-2021-3347)

  - A vulnerability was found in Linux kernel where     non-blocking socket in llcp_sock_connect() leads to     leak and eventually hanging-up the     system.(CVE-2020-25673)

  - net/bluetooth/hci_request.c in the Linux kernel through     5.12.2 has a race condition for removal of the HCI     controller.(CVE-2021-32399)

  - In all Qualcomm products with Android releases from CAF     using the Linux kernel, during DMA allocation, due to     wrong data type of size, allocation size gets truncated     which makes allocation succeed when it should     fail.(CVE-2017-9725)

  - A flaw double-free memory corruption in the Linux     kernel HCI device initialization subsystem was found in     the way user attach malicious HCI TTY Bluetooth device.
    A local user could use this flaw to crash the system.
    This flaw affects all the Linux kernel versions     starting from 3.13.(CVE-2021-3564)

  - A flaw was found in the CAN BCM networking protocol in     the Linux kernel, where a local attacker can abuse a     flaw in the CAN subsystem to corrupt memory, crash the     system or escalate privileges.(CVE-2021-3609)

  - The ip6gre_err function in net/ipv6/ip6_gre.c in the     Linux kernel allows remote attackers to have     unspecified impact via vectors involving GRE flags in     an IPv6 packet, which trigger an out-of-bounds     access.(CVE-2017-5897)

  - An Out-of-Bounds Read was discovered in     arch/arm/mach-footbridge/personal-pci.c in the Linux     kernel through 5.12.11 because of the lack of a check     for a value that shouldn't be negative, e.g., access to     element -2 of an array, aka     CID-298a58e165e4.(CVE-2021-32078)

  - In the Linux kernel before 4.20.8,     kvm_ioctl_create_device in virt/kvm/kvm_main.c     mishandles reference counting because of a race     condition, leading to a use-after-free.(CVE-2019-6974)

  - In uvc_scan_chain_forward of uvc_driver.c, there is a     possible linked list corruption due to an unusual root     cause. This could lead to local escalation of privilege     in the kernel with no additional execution privileges     needed. User interaction is not needed for     exploitation.(CVE-2020-0404)

  - In create_pinctrl of core.c, there is a possible out of     bounds read due to a use after free. This could lead to     local information disclosure with no additional     execution privileges needed. User interaction is not     needed for exploitation.(CVE-2020-0427)

  - In kbd_keycode of keyboard.c, there is a possible out     of bounds write due to a missing bounds check. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-144161459(CVE-2020-0431)

  - In blk_mq_queue_tag_busy_iter of blk-mq-tag.c, there is     a possible use after free due to improper locking. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for     exploitation.(CVE-2020-0433)

  - In various methods of hid-multitouch.c, there is a     possible out of bounds write due to a missing bounds     check. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for     exploitation.(CVE-2020-0465)

  - A vulnerability was found in the Linux Kernel where the     function sunkbd_reinit having been scheduled by     sunkbd_interrupt before sunkbd being freed. Though the     dangling pointer is set to NULL in sunkbd_disconnect,     there is still an alias in sunkbd_reinit causing Use     After Free.(CVE-2020-25669)

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.

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4118-1 advisory.

  - 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/f2fs/super.c in the Linux kernel through 4.14. A denial of service (out-of-     bounds memory access and BUG) can occur upon encountering an abnormal bitmap size when mounting a crafted     f2fs image. (CVE-2018-13096)

  - An issue was discovered in fs/f2fs/super.c in the Linux kernel through 4.17.3. There is an out-of-bounds     read or a divide-by-zero error for an incorrect user_block_count in a corrupted f2fs image, leading to a     denial of service (BUG). (CVE-2018-13097)

  - An issue was discovered in fs/f2fs/inode.c in the Linux kernel through 4.17.3. A denial of service (slab     out-of-bounds read and BUG) can occur for a modified f2fs filesystem image in which FI_EXTRA_ATTR is set     in an inode. (CVE-2018-13098)

  - An issue was discovered in fs/f2fs/inline.c in the Linux kernel through 4.4. A denial of service (out-of-     bounds memory access and BUG) can occur for a modified f2fs filesystem image in which an inline inode     contains an invalid reserved blkaddr. (CVE-2018-13099)

  - An issue was discovered in fs/f2fs/super.c in the Linux kernel through 4.17.3, which does not properly     validate secs_per_zone in a corrupted f2fs image, as demonstrated by a divide-by-zero error.
    (CVE-2018-13100)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc     rb_trees when reloc control has not been initialized. (CVE-2018-14609)

  - An issue was discovered in the Linux kernel through 4.17.10. There is out-of-bounds access in     write_extent_buffer() when mounting and operating a crafted btrfs image, because of a lack of verification     that each block group has a corresponding chunk at mount time, within btrfs_read_block_groups in     fs/btrfs/extent-tree.c. (CVE-2018-14610)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a use-after-free in     try_merge_free_space() when mounting a crafted btrfs image, because of a lack of chunk type flag checks in     btrfs_check_chunk_valid in fs/btrfs/volumes.c. (CVE-2018-14611)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in     btrfs_root_node() when mounting a crafted btrfs image, because of a lack of chunk block group mapping     validation in btrfs_read_block_groups in fs/btrfs/extent-tree.c, and a lack of empty-tree checks in     check_leaf in fs/btrfs/tree-checker.c. (CVE-2018-14612)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in     io_ctl_map_page() when mounting and operating a crafted btrfs image, because of a lack of block group item     validation in check_leaf_item in fs/btrfs/tree-checker.c. (CVE-2018-14613)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an out-of-bounds access in
    __remove_dirty_segment() in fs/f2fs/segment.c when mounting an f2fs image. (CVE-2018-14614)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a buffer overflow in     truncate_inline_inode() in fs/f2fs/inline.c when umounting an f2fs image, because a length value may be     negative. (CVE-2018-14615)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference in     fscrypt_do_page_crypto() in fs/crypto/crypto.c when operating on a file in a corrupted f2fs image.
    (CVE-2018-14616)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic     in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+     filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
    (CVE-2018-14617)

  - A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after     the final file truncation (removal). The new file created with the same inode may contain leftover pages     from cleancache and the old file data instead of the new one. (CVE-2018-16862)

  - The function hso_get_config_data in drivers/net/usb/hso.c in the Linux kernel through 4.19.8 reads if_num     from the USB device (as a u8) and uses it to index a small array, resulting in an object out-of-bounds     (OOB) read that potentially allows arbitrary read in the kernel address space. (CVE-2018-19985)

  - An issue was discovered in the Linux kernel before 4.19.9. The USB subsystem mishandles size checks during     the reading of an extra descriptor, related to __usb_get_extra_descriptor in drivers/usb/core/usb.c.
    (CVE-2018-20169)

  - An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl function in     drivers/net/appletalk/ipddp.c allows local users to obtain sensitive kernel address information by     leveraging CAP_NET_ADMIN to read the ipddp_route dev and next fields via an SIOCFINDIPDDPRT ioctl call.
    (CVE-2018-20511)

  - In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to     cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other     impact by inducing a high load. (CVE-2018-20784)

  - 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)

  - Bluetooth firmware or operating system software drivers in macOS versions before 10.13, High Sierra and     iOS versions before 11.4, and Android versions before the 2018-06-05 patch may not sufficiently validate     elliptic curve parameters used to generate public keys during a Diffie-Hellman key exchange, which may     allow a remote attacker to obtain the encryption key used by the device. (CVE-2018-5383)

  - Insufficient access control in the Intel(R) PROSet/Wireless WiFi Software driver before version 21.10 may     allow an unauthenticated user to potentially enable denial of service via adjacent access. (CVE-2019-0136)

  - 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 was found in the Linux kernel's Bluetooth implementation of UART, all versions kernel 3.x.x before     4.18.0 and kernel 5.x.x. An attacker with local access and write permissions to the Bluetooth hardware     could use this flaw to issue a specially crafted ioctl function call and cause the system to crash.
    (CVE-2019-10207)

  - In the Linux kernel before 5.1.7, a device can be tracked by an attacker using the IP ID values the kernel     produces for connection-less protocols (e.g., UDP and ICMP). When such traffic is sent to multiple     destination IP addresses, it is possible to obtain hash collisions (of indices to the counter array) and     thereby obtain the hashing key (via enumeration). An attack may be conducted by hosting a crafted web page     that uses WebRTC or gQUIC to force UDP traffic to attacker-controlled IP addresses. (CVE-2019-10638)

  - The Linux kernel 4.x (starting from 4.1) and 5.x before 5.0.8 allows Information Exposure (partial kernel     address disclosure), leading to a KASLR bypass. Specifically, it is possible to extract the KASLR kernel     image offset using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and     ICMP). When such traffic is sent to multiple destination IP addresses, it is possible to obtain hash     collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). This     key contains enough bits from a kernel address (of a static variable) so when the key is extracted (via     enumeration), the offset of the kernel image is exposed. This attack can be carried out remotely, by the     attacker forcing the target device to send UDP or ICMP (or certain other) traffic to attacker-controlled     IP addresses. Forcing a server to send UDP traffic is trivial if the server is a DNS server. ICMP traffic     is trivial if the server answers ICMP Echo requests (ping). For client targets, if the target visits the     attacker's web page, then WebRTC or gQUIC can be used to force UDP traffic to attacker-controlled IP     addresses. NOTE: this attack against KASLR became viable in 4.1 because IP ID generation was changed to     have a dependency on an address associated with a network namespace. (CVE-2019-10639)

  - Insufficient input validation in Kernel Mode Driver in Intel(R) i915 Graphics for Linux before version 5.0     may allow an authenticated user to potentially enable escalation of privilege via local access.
    (CVE-2019-11085)

  - The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-     free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c,     include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can     occur with FUSE requests. (CVE-2019-11487)

  - 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)

  - An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c in the Linux kernel before 5.0.8. There is a     race condition leading to a use-after-free, related to net namespace cleanup. (CVE-2019-11815)

  - 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)

  - The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c in the Linux kernel before 5.0.15 allows a     local user to obtain potentially sensitive information from kernel stack memory via a HIDPCONNADD command,     because a name field may not end with a '\0' character. (CVE-2019-11884)

  - An issue was discovered in the Linux kernel before 4.20.15. The nfc_llcp_build_tlv function in     net/nfc/llcp_commands.c may return NULL. If the caller does not check for this, it will trigger a NULL     pointer dereference. This will cause denial of service. This affects nfc_llcp_build_gb in     net/nfc/llcp_core.c. (CVE-2019-12818)

  - An issue was discovered in the Linux kernel before 5.0. The function __mdiobus_register() in     drivers/net/phy/mdio_bus.c calls put_device(), which will trigger a fixed_mdio_bus_init use-after-free.
    This will cause a denial of service. (CVE-2019-12819)

  - A NULL pointer dereference vulnerability in the function nfc_genl_deactivate_target() in net/nfc/netlink.c     in the Linux kernel before 5.1.13 can be triggered by a malicious user-mode program that omits certain NFC     attributes, leading to denial of service. (CVE-2019-12984)

  - In arch/x86/lib/insn-eval.c in the Linux kernel before 5.1.9, there is a use-after-free for access to an     LDT entry because of a race condition between modify_ldt() and a #BR exception for an MPX bounds     violation. (CVE-2019-13233)

  - In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the     credentials of a process that wants to create a ptrace relationship, which allows local users to obtain     root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops     privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an     object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of     a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper     with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.
    (CVE-2019-13272)

  - In parse_hid_report_descriptor in drivers/input/tablet/gtco.c in the Linux kernel through 5.2.1, a     malicious USB device can send an HID report that triggers an out-of-bounds write during generation of     debugging messages. (CVE-2019-13631)

  - In the Linux kernel before 5.2.3, set_geometry in drivers/block/floppy.c does not validate the sect and     head fields, as demonstrated by an integer overflow and out-of-bounds read. It can be triggered by an     unprivileged local user when a floppy disk has been inserted. NOTE: QEMU creates the floppy device by     default. (CVE-2019-14283)

  - In the Linux kernel before 5.2.3, drivers/block/floppy.c allows a denial of service by setup_format_params     division-by-zero. Two consecutive ioctls can trigger the bug: the first one should set the drive geometry     with .sect and .rate values that make F_SECT_PER_TRACK be zero. Next, the floppy format operation should     be called. It can be triggered by an unprivileged local user even when a floppy disk has not been     inserted. NOTE: QEMU creates the floppy device by default. (CVE-2019-14284)

  - In the Linux kernel before 4.16.4, a double-locking error in drivers/usb/dwc3/gadget.c may potentially     cause a deadlock with f_hid. (CVE-2019-14763)

  - An issue was discovered in drivers/scsi/qedi/qedi_dbg.c in the Linux kernel before 5.1.12. In the     qedi_dbg_* family of functions, there is an out-of-bounds read. (CVE-2019-15090)

  - An issue was discovered in the Linux kernel before 5.2.6. There is a use-after-free caused by a malicious     USB device in the drivers/media/v4l2-core/v4l2-dev.c driver because drivers/media/radio/radio-raremono.c     does not properly allocate memory. (CVE-2019-15211)

  - An issue was discovered in the Linux kernel before 5.1.8. There is a double-free caused by a malicious USB     device in the drivers/usb/misc/rio500.c driver. (CVE-2019-15212)

  - An issue was discovered in the Linux kernel before 5.0.10. There is a use-after-free in the sound     subsystem because card disconnection causes certain data structures to be deleted too early. This is     related to sound/core/init.c and sound/core/info.c. (CVE-2019-15214)

  - An issue was discovered in the Linux kernel before 5.2.6. There is a use-after-free caused by a malicious     USB device in the drivers/media/usb/cpia2/cpia2_usb.c driver. (CVE-2019-15215)

  - An issue was discovered in the Linux kernel before 5.0.14. There is a NULL pointer dereference caused by a     malicious USB device in the drivers/usb/misc/yurex.c driver. (CVE-2019-15216)

  - An issue was discovered in the Linux kernel before 5.1.8. There is a NULL pointer dereference caused by a     malicious USB device in the drivers/media/usb/siano/smsusb.c driver. (CVE-2019-15218)

  - An issue was discovered in the Linux kernel before 5.2.1. There is a use-after-free caused by a malicious     USB device in the drivers/net/wireless/intersil/p54/p54usb.c driver. (CVE-2019-15220)

  - An issue was discovered in the Linux kernel before 5.1.17. There is a NULL pointer dereference caused by a     malicious USB device in the sound/usb/line6/pcm.c driver. (CVE-2019-15221)

  - An issue was discovered in the Linux kernel before 5.0.9. There is a use-after-free in atalk_proc_exit,     related to net/appletalk/atalk_proc.c, net/appletalk/ddp.c, and net/appletalk/sysctl_net_atalk.c.
    (CVE-2019-15292)

  - In em28xx_unregister_dvb of em28xx-dvb.c, there is a possible use after free issue. This could lead to     local escalation of privilege with no additional execution privileges needed. User interaction is not     needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-111761954References:
    Upstream kernel (CVE-2019-2024)

  - In uvc_parse_standard_control of uvc_driver.c, there is a possible out-of-bound read due to improper input     validation. This could lead to local information disclosure with no additional execution privileges     needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel.
    Android ID: A-111760968. (CVE-2019-2101)

  - An issue was discovered in can_can_gw_rcv in net/can/gw.c in the Linux kernel through 4.19.13. The CAN     frame modification rules allow bitwise logical operations that can be also applied to the can_dlc field.
    The privileged user root with CAP_NET_ADMIN can create a CAN frame modification rule that makes the data     length code a higher value than the available CAN frame data size. In combination with a configured     checksum calculation where the result is stored relatively to the end of the data (e.g. cgw_csum_xor_rel)     the tail of the skb (e.g. frag_list pointer in skb_shared_info) can be rewritten which finally can cause a     system crash. Because of a missing check, the CAN drivers may write arbitrary content beyond the data     registers in the CAN controller's I/O memory when processing can-gw manipulated outgoing frames.
    (CVE-2019-3701)

  - A flaw was found in the Linux kernel in the function hid_debug_events_read() in drivers/hid/hid-debug.c     file which may enter an infinite loop with certain parameters passed from a userspace. A local privileged     user (root) can cause a system lock up and a denial of service. Versions from v4.18 and newer are     vulnerable. (CVE-2019-3819)

  - 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)

  - 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 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)

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 / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4094-1 advisory.

  - 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/f2fs/super.c in the Linux kernel through 4.14. A denial of service (out-of-     bounds memory access and BUG) can occur upon encountering an abnormal bitmap size when mounting a crafted     f2fs image. (CVE-2018-13096)

  - An issue was discovered in fs/f2fs/super.c in the Linux kernel through 4.17.3. There is an out-of-bounds     read or a divide-by-zero error for an incorrect user_block_count in a corrupted f2fs image, leading to a     denial of service (BUG). (CVE-2018-13097)

  - An issue was discovered in fs/f2fs/inode.c in the Linux kernel through 4.17.3. A denial of service (slab     out-of-bounds read and BUG) can occur for a modified f2fs filesystem image in which FI_EXTRA_ATTR is set     in an inode. (CVE-2018-13098)

  - An issue was discovered in fs/f2fs/inline.c in the Linux kernel through 4.4. A denial of service (out-of-     bounds memory access and BUG) can occur for a modified f2fs filesystem image in which an inline inode     contains an invalid reserved blkaddr. (CVE-2018-13099)

  - An issue was discovered in fs/f2fs/super.c in the Linux kernel through 4.17.3, which does not properly     validate secs_per_zone in a corrupted f2fs image, as demonstrated by a divide-by-zero error.
    (CVE-2018-13100)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc     rb_trees when reloc control has not been initialized. (CVE-2018-14609)

  - An issue was discovered in the Linux kernel through 4.17.10. There is out-of-bounds access in     write_extent_buffer() when mounting and operating a crafted btrfs image, because of a lack of verification     that each block group has a corresponding chunk at mount time, within btrfs_read_block_groups in     fs/btrfs/extent-tree.c. (CVE-2018-14610)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a use-after-free in     try_merge_free_space() when mounting a crafted btrfs image, because of a lack of chunk type flag checks in     btrfs_check_chunk_valid in fs/btrfs/volumes.c. (CVE-2018-14611)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in     btrfs_root_node() when mounting a crafted btrfs image, because of a lack of chunk block group mapping     validation in btrfs_read_block_groups in fs/btrfs/extent-tree.c, and a lack of empty-tree checks in     check_leaf in fs/btrfs/tree-checker.c. (CVE-2018-14612)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in     io_ctl_map_page() when mounting and operating a crafted btrfs image, because of a lack of block group item     validation in check_leaf_item in fs/btrfs/tree-checker.c. (CVE-2018-14613)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an out-of-bounds access in
    __remove_dirty_segment() in fs/f2fs/segment.c when mounting an f2fs image. (CVE-2018-14614)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a buffer overflow in     truncate_inline_inode() in fs/f2fs/inline.c when umounting an f2fs image, because a length value may be     negative. (CVE-2018-14615)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference in     fscrypt_do_page_crypto() in fs/crypto/crypto.c when operating on a file in a corrupted f2fs image.
    (CVE-2018-14616)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic     in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+     filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
    (CVE-2018-14617)

  - A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after     the final file truncation (removal). The new file created with the same inode may contain leftover pages     from cleancache and the old file data instead of the new one. (CVE-2018-16862)

  - An issue was discovered in the Linux kernel before 4.19.9. The USB subsystem mishandles size checks during     the reading of an extra descriptor, related to __usb_get_extra_descriptor in drivers/usb/core/usb.c.
    (CVE-2018-20169)

  - An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl function in     drivers/net/appletalk/ipddp.c allows local users to obtain sensitive kernel address information by     leveraging CAP_NET_ADMIN to read the ipddp_route dev and next fields via an SIOCFINDIPDDPRT ioctl call.
    (CVE-2018-20511)

  - 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)

  - Bluetooth firmware or operating system software drivers in macOS versions before 10.13, High Sierra and     iOS versions before 11.4, and Android versions before the 2018-06-05 patch may not sufficiently validate     elliptic curve parameters used to generate public keys during a Diffie-Hellman key exchange, which may     allow a remote attacker to obtain the encryption key used by the device. (CVE-2018-5383)

  - 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)

  - 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)

  - An issue was discovered in dlpar_parse_cc_property in arch/powerpc/platforms/pseries/dlpar.c in the Linux     kernel through 5.1.6. There is an unchecked kstrdup of prop->name, which might allow an attacker to cause     a denial of service (NULL pointer dereference and system crash). (CVE-2019-12614)

  - An issue was discovered in the Linux kernel before 4.20.15. The nfc_llcp_build_tlv function in     net/nfc/llcp_commands.c may return NULL. If the caller does not check for this, it will trigger a NULL     pointer dereference. This will cause denial of service. This affects nfc_llcp_build_gb in     net/nfc/llcp_core.c. (CVE-2019-12818)

  - An issue was discovered in the Linux kernel before 5.0. The function __mdiobus_register() in     drivers/net/phy/mdio_bus.c calls put_device(), which will trigger a fixed_mdio_bus_init use-after-free.
    This will cause a denial of service. (CVE-2019-12819)

  - A NULL pointer dereference vulnerability in the function nfc_genl_deactivate_target() in net/nfc/netlink.c     in the Linux kernel before 5.1.13 can be triggered by a malicious user-mode program that omits certain NFC     attributes, leading to denial of service. (CVE-2019-12984)

  - In arch/x86/lib/insn-eval.c in the Linux kernel before 5.1.9, there is a use-after-free for access to an     LDT entry because of a race condition between modify_ldt() and a #BR exception for an MPX bounds     violation. (CVE-2019-13233)

  - In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the     credentials of a process that wants to create a ptrace relationship, which allows local users to obtain     root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops     privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an     object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of     a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper     with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.
    (CVE-2019-13272)

  - In em28xx_unregister_dvb of em28xx-dvb.c, there is a possible use after free issue. This could lead to     local escalation of privilege with no additional execution privileges needed. User interaction is not     needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-111761954References:
    Upstream kernel (CVE-2019-2024)

  - In uvc_parse_standard_control of uvc_driver.c, there is a possible out-of-bound read due to improper input     validation. This could lead to local information disclosure with no additional execution privileges     needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel.
    Android ID: A-111760968. (CVE-2019-2101)

  - 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)

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

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.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4570 advisory.

  - Linux Linux kernel version at least v4.8 onwards, probably well before contains a Insufficient input     validation vulnerability in bnx2x network card driver that can 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..
    (CVE-2018-1000026)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc     rb_trees when reloc control has not been initialized. (CVE-2018-14609)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in     btrfs_root_node() when mounting a crafted btrfs image, because of a lack of chunk block group mapping     validation in btrfs_read_block_groups in fs/btrfs/extent-tree.c, and a lack of empty-tree checks in     check_leaf in fs/btrfs/tree-checker.c. (CVE-2018-14612)

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

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4533 advisory.

  - The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always     initialize the crc32c checksum driver, which allows attackers to cause a denial of service     (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
    (CVE-2018-1094)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc     rb_trees when reloc control has not been initialized. (CVE-2018-14609)

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

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4532 advisory.

  - The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always     initialize the crc32c checksum driver, which allows attackers to cause a denial of service     (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
    (CVE-2018-1094)

  - An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through     4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a     local attacker to exploit racy stack unwinding and leak kernel task stack contents. (CVE-2018-17972)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc     rb_trees when reloc control has not been initialized. (CVE-2018-14609)

  - 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)

Note that Nessus has not tested for this issue 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-3821-2 advisory.

  - Linux kernel is vulnerable to a stack-out-of-bounds write in the ext4 filesystem code when mounting and     writing to a crafted ext4 image in ext4_update_inline_data(). An attacker could use this to cause a system     crash and a denial of service. (CVE-2018-10880)

  - 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/f2fs/super.c in the Linux kernel through 4.14. A denial of service (out-of-     bounds memory access and BUG) can occur upon encountering an abnormal bitmap size when mounting a crafted     f2fs image. (CVE-2018-13096)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc     rb_trees when reloc control has not been initialized. (CVE-2018-14609)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic     in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+     filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
    (CVE-2018-14617)

  - An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through     4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a     local attacker to exploit racy stack unwinding and leak kernel task stack contents. (CVE-2018-17972)

  - arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the     KVM_SET_ON_REG ioctl. This is exploitable by attackers who can create virtual machines. An attacker can     arbitrarily redirect the hypervisor flow of control (with full register control). An attacker can also     cause a denial of service (hypervisor panic) via an illegal exception return. This occurs because of     insufficient restrictions on userspace access to the core register file, and because PSTATE.M validation     does not prevent unintended execution modes. (CVE-2018-18021)

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-3821-1 advisory.

  - Linux kernel is vulnerable to a stack-out-of-bounds write in the ext4 filesystem code when mounting and     writing to a crafted ext4 image in ext4_update_inline_data(). An attacker could use this to cause a system     crash and a denial of service. (CVE-2018-10880)

  - 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/f2fs/super.c in the Linux kernel through 4.14. A denial of service (out-of-     bounds memory access and BUG) can occur upon encountering an abnormal bitmap size when mounting a crafted     f2fs image. (CVE-2018-13096)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc     rb_trees when reloc control has not been initialized. (CVE-2018-14609)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic     in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+     filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
    (CVE-2018-14617)

  - An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through     4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a     local attacker to exploit racy stack unwinding and leak kernel task stack contents. (CVE-2018-17972)

  - arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the     KVM_SET_ON_REG ioctl. This is exploitable by attackers who can create virtual machines. An attacker can     arbitrarily redirect the hypervisor flow of control (with full register control). An attacker can also     cause a denial of service (hypervisor panic) via an illegal exception return. This occurs because of     insufficient restrictions on userspace access to the core register file, and because PSTATE.M validation     does not prevent unintended execution modes. (CVE-2018-18021)

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-2018-6554

A memory leak in the irda_bind function in the irda subsystem was discovered. A local user can take advantage of this flaw to cause a denial of service (memory consumption).

CVE-2018-6555

A flaw was discovered in the irda_setsockopt function in the irda subsystem, allowing a local user to cause a denial of service (use-after-free and system crash).

CVE-2018-7755

Brian Belleville discovered a flaw in the fd_locked_ioctl function in the floppy driver in the Linux kernel. The floppy driver copies a kernel pointer to user memory in response to the FDGETPRM ioctl. A local user with access to a floppy drive device can take advantage of this flaw to discover the location kernel code and data.

CVE-2018-9363

It was discovered that the Bluetooth HIDP implementation did not correctly check the length of received report messages. A paired HIDP device could use this to cause a buffer overflow, leading to denial of service (memory corruption or crash) or potentially remote code execution.

CVE-2018-9516

It was discovered that the HID events interface in debugfs did not correctly limit the length of copies to user buffers. A local user with access to these files could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.
However, by default debugfs is only accessible by the root user.

CVE-2018-10902

It was discovered that the rawmidi kernel driver does not protect against concurrent access which leads to a double-realloc (double free) flaw. A local attacker can take advantage of this issue for privilege escalation.

CVE-2018-10938

Yves Younan from Cisco reported that the Cipso IPv4 module did not correctly check the length of IPv4 options. On custom kernels with CONFIG_NETLABEL enabled, a remote attacker could use this to cause a denial of service (hang).

CVE-2018-13099

Wen Xu from SSLab at Gatech reported a use-after-free bug in the F2FS implementation. An attacker able to mount a crafted F2FS volume could use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.

CVE-2018-14609

Wen Xu from SSLab at Gatech reported a potential NULL pointer dereference in the F2FS implementation. An attacker able to mount arbitrary F2FS volumes could use this to cause a denial of service (crash).

CVE-2018-14617

Wen Xu from SSLab at Gatech reported a potential NULL pointer dereference in the HFS+ implementation. An attacker able to mount arbitrary HFS+ volumes could use this to cause a denial of service (crash).

CVE-2018-14633

Vincent Pelletier discovered a stack-based buffer overflow flaw in the chap_server_compute_md5() function in the iSCSI target code. An unauthenticated remote attacker can take advantage of this flaw to cause a denial of service or possibly to get a non-authorized access to data exported by an iSCSI target.

CVE-2018-14678

M. Vefa Bicakci and Andy Lutomirski discovered a flaw in the kernel exit code used on amd64 systems running as Xen PV guests. A local user could use this to cause a denial of service (crash).

CVE-2018-14734

A use-after-free bug was discovered in the InfiniBand communication manager. A local user could use this to cause a denial of service (crash or memory corruption) or possible for privilege escalation.

CVE-2018-15572

Esmaiel Mohammadian Koruyeh, Khaled Khasawneh, Chengyu Song, and Nael Abu-Ghazaleh, from University of California, Riverside, reported a variant of Spectre variant 2, dubbed SpectreRSB. A local user may be able to use this to read sensitive information from processes owned by other users.

CVE-2018-15594

Nadav Amit reported that some indirect function calls used in paravirtualised guests were vulnerable to Spectre variant 2. A local user may be able to use this to read sensitive information from the kernel.

CVE-2018-16276

Jann Horn discovered that the yurex driver did not correctly limit the length of copies to user buffers. A local user with access to a yurex device node could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2018-16658

It was discovered that the cdrom driver does not correctly validate the parameter to the CDROM_DRIVE_STATUS ioctl. A user with access to a cdrom device could use this to read sensitive information from the kernel or to cause a denial of service (crash).

CVE-2018-17182

Jann Horn discovered that the vmacache_flush_all function mishandles sequence number overflows. A local user can take advantage of this flaw to trigger a use-after-free, causing a denial of service (crash or memory corruption) or privilege escalation.

For Debian 8 'Jessie', these problems have been fixed in version 4.9.110-3+deb9u5~deb8u1.

We recommend that you upgrade your linux-4.9 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-2018-6554     A memory leak in the irda_bind function in the irda     subsystem was discovered. A local user can take     advantage of this flaw to cause a denial of service     (memory consumption).

  - CVE-2018-6555     A flaw was discovered in the irda_setsockopt function in     the irda subsystem, allowing a local user to cause a     denial of service (use-after-free and system crash).

  - CVE-2018-7755     Brian Belleville discovered a flaw in the     fd_locked_ioctl function in the floppy driver in the     Linux kernel. The floppy driver copies a kernel pointer     to user memory in response to the FDGETPRM ioctl. A     local user with access to a floppy drive device can take     advantage of this flaw to discover the location kernel     code and data.

  - CVE-2018-9363     It was discovered that the Bluetooth HIDP implementation     did not correctly check the length of received report     messages. A paired HIDP device could use this to cause a     buffer overflow, leading to denial of service (memory     corruption or crash) or potentially remote code     execution.

  - CVE-2018-9516     It was discovered that the HID events interface in     debugfs did not correctly limit the length of copies to     user buffers. A local user with access to these files     could use this to cause a denial of service (memory     corruption or crash) or possibly for privilege     escalation. However, by default debugfs is only     accessible by the root user.

  - CVE-2018-10902     It was discovered that the rawmidi kernel driver does     not protect against concurrent access which leads to a     double-realloc (double free) flaw. A local attacker can     take advantage of this issue for privilege escalation.

  - CVE-2018-10938     Yves Younan from Cisco reported that the Cipso IPv4     module did not correctly check the length of IPv4     options. On custom kernels with CONFIG_NETLABEL enabled,     a remote attacker could use this to cause a denial of     service (hang).

  - CVE-2018-13099     Wen Xu from SSLab at Gatech reported a use-after-free     bug in the F2FS implementation. An attacker able to     mount a crafted F2FS volume could use this to cause a     denial of service (crash or memory corruption) or     possibly for privilege escalation.

  - CVE-2018-14609     Wen Xu from SSLab at Gatech reported a potential NULL     pointer dereference in the F2FS implementation. An     attacker able to mount a crafted F2FS volume could use     this to cause a denial of service (crash).

  - CVE-2018-14617     Wen Xu from SSLab at Gatech reported a potential NULL     pointer dereference in the HFS+ implementation. An     attacker able to mount a crafted HFS+ volume could use     this to cause a denial of service (crash).

  - CVE-2018-14633     Vincent Pelletier discovered a stack-based buffer     overflow flaw in the chap_server_compute_md5() function     in the iSCSI target code. An unauthenticated remote     attacker can take advantage of this flaw to cause a     denial of service or possibly to get a non-authorized     access to data exported by an iSCSI target.

  - CVE-2018-14678     M. Vefa Bicakci and Andy Lutomirski discovered a flaw in     the kernel exit code used on amd64 systems running as     Xen PV guests. A local user could use this to cause a     denial of service (crash).

  - CVE-2018-14734     A use-after-free bug was discovered in the InfiniBand     communication manager. A local user could use this to     cause a denial of service (crash or memory corruption)     or possible for privilege escalation.

  - CVE-2018-15572     Esmaiel Mohammadian Koruyeh, Khaled Khasawneh, Chengyu     Song, and Nael Abu-Ghazaleh, from University of     California, Riverside, reported a variant of Spectre     variant 2, dubbed SpectreRSB. A local user may be able     to use this to read sensitive information from processes     owned by other users.

  - CVE-2018-15594     Nadav Amit reported that some indirect function calls     used in paravirtualised guests were vulnerable to     Spectre variant 2. A local user may be able to use this     to read sensitive information from the kernel.

  - CVE-2018-16276     Jann Horn discovered that the yurex driver did not     correctly limit the length of copies to user buffers. A     local user with access to a yurex device node could use     this to cause a denial of service (memory corruption or     crash) or possibly for privilege escalation.

  - CVE-2018-16658     It was discovered that the cdrom driver does not     correctly validate the parameter to the     CDROM_DRIVE_STATUS ioctl. A user with access to a cdrom     device could use this to read sensitive information from     the kernel or to cause a denial of service (crash).

  - CVE-2018-17182     Jann Horn discovered that the vmacache_flush_all     function mishandles sequence number overflows. A local     user can take advantage of this flaw to trigger a     use-after-free, causing a denial of service (crash or     memory corruption) or privilege escalation.

ID	Name	Product	Family	Severity
153271	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2021-2392)	Nessus	Huawei Local Security Checks	critical
128478	Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel (AWS) vulnerabilities (USN-4118-1)	Nessus	Ubuntu Local Security Checks	critical
127889	Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4094-1)	Nessus	Ubuntu Local Security Checks	critical
124800	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1476)	Nessus	Huawei Local Security Checks	high
122802	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2019-4570)	Nessus	Oracle Linux Local Security Checks	medium
122045	Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2019-4533)	Nessus	Oracle Linux Local Security Checks	medium
122044	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4532)	Nessus	Oracle Linux Local Security Checks	medium
118972	Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3821-2)	Nessus	Ubuntu Local Security Checks	high
118971	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3821-1)	Nessus	Ubuntu Local Security Checks	high
117908	Debian DLA-1531-1 : linux-4.9 security update	Nessus	Debian Local Security Checks	high
117862	Debian DSA-4308-1 : linux - security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2018-14609

medium

Tenable Plugins

critical

critical

critical

high

medium

medium

medium

high

high

high

high