This update for the Linux Kernel 4.4.74-92_38 fixes several issues.
The following security issues were fixed :

  - CVE-2018-3646: Local attackers in virtualized guest     systems could use speculative code patterns on     hyperthreaded processors to read data present in the L1     Datacache used by other hyperthreads on the same CPU     core, potentially leaking sensitive data, even from     other virtual machines or the host system (bsc#1099306).

  - CVE-2017-18344: The timer_create syscall implementation     in kernel/time/posix-timers.c didn't properly validate     the sigevent->sigev_notify field, which lead to     out-of-bounds access in the show_timer function (called     when /proc/$PID/timers is read). This allowed userspace     applications to read arbitrary kernel memory (on a     kernel built with CONFIG_POSIX_TIMERS and     CONFIG_CHECKPOINT_RESTORE) (bsc#1103203). before 4.14.8

  - CVE-2017-11600: net/xfrm/xfrm_policy.c did not ensure     that the dir value of xfrm_userpolicy_id is     XFRM_POLICY_MAX or less, which allowed local users to     cause a denial of service (out-of-bounds access) or     possibly have unspecified other impact via an     XFRM_MSG_MIGRATE xfrm Netlink message (bsc#1096564)

  - CVE-2018-10853: A flaw was found in kvm. In which     certain instructions such as sgdt/sidt call     segmented_write_std didn't propagate access correctly.
    As such, during userspace induced exception, the guest     can incorrectly assume that the exception happened in     the kernel and panic. (bsc#1097108).

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 remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3459 advisory.

  - kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c (CVE-2017-18344)

  - kernel: IP fragments with random offsets allow a remote denial of service (FragmentSmack) (CVE-2018-5391)

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

The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes. The following security bugs were fixed:
CVE-2018-5390 aka SegmentSmack: A remote attacker even with relatively low bandwidth could have caused lots of CPU usage by triggering the worst case scenario during IP and/or TCP fragment reassembly (bsc#1102340)

  - CVE-2017-18344: The timer_create syscall implementation     didn't properly validate input, which could have lead to     out-of-bounds access. This allowed userspace     applications to read arbitrary kernel memory in some     setups. (bsc#1102851)

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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8     doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the     show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read     arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).
    (CVE-2017-18344)

Note that Nessus relies on the presence of the package as reported by the vendor.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003188 advisory.

    The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8     doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the     show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read     arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

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

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3540 advisory.

  - kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c (CVE-2017-18344)

  - kernel: IP fragments with random offsets allow a remote denial of service (FragmentSmack) (CVE-2018-5391)

  - kernel: mm: use-after-free in do_get_mempolicy function allows local DoS or other unspecified impact     (CVE-2018-10675)

  - kernel: Integer overflow in Linux's create_elf_tables function (CVE-2018-14634)

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

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3591 advisory.

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

    Security Fix(es):

    * kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c (CVE-2017-18344)

    * kernel: Integer overflow in Linux's create_elf_tables function (CVE-2018-14634)

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

    Red Hat would like to thank Qualys Research Labs for reporting CVE-2018-14634.

    Bug Fix(es):

    * On systems running Red Hat Enterprise Linux 7.3 with Red Hat OpenShift Container Platform 3.5, a node     sometimes got into NodeNotReady state after a CPU softlockup. Consequently, the node was not available.
    This update fixes some scheduling latency sources in memory compaction and in the inodes memory reclaim.
    As a result, nodes no longer get into NodeNotReady state under the described circumstances. (BZ#1625866)

    * Previously, a kernel panic occurred when the kernel tried to make an out of bound access to the array     that describes the L1 Terminal Fault (L1TF) mitigation state on systems without Extended Page Tables (EPT)     support. This update extends the array of mitigation states to cover all the states, which effectively     prevents out of bound array access. Also, this update enables rejecting invalid, irrelevant values, that     might be erroneously provided by the userspace. As a result, the kernel no longer panics in the described     scenario. (BZ#1629566)

    * Previously, a packet was missing the User Datagram Protocol (UDP) payload checksum during a full     checksum computation, if the hardware checksum was not applied. As a consequence, a packet with an     incorrect checksum was dropped by a peer. With this update, the kernel includes the UDP payload checksum     during the full checksum computation. As a result, the checksum is computed correctly and the packet can     be received by the peer. (BZ#1635794)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3586 advisory.

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

    Security Fix(es):

    * A flaw named FragmentSmack was found in the way the Linux kernel handled reassembly of fragmented IPv4     and IPv6 packets. A remote attacker could use this flaw to trigger time and calculation expensive fragment     reassembly algorithm by sending specially crafted packets which could lead to a CPU saturation and hence a     denial of service on the system. (CVE-2018-5391)

    * kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c (CVE-2017-18344)

    * kernel: mm: use-after-free in do_get_mempolicy function allows local DoS or other unspecified impact     (CVE-2018-10675)

    * kernel: Integer overflow in Linux's create_elf_tables function (CVE-2018-14634)

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

    Red Hat would like to thank Juha-Matti Tilli (Aalto University - Department of Communications and     Networking and Nokia Bell Labs) for reporting CVE-2018-5391 and Qualys Research Labs for reporting     CVE-2018-14634.

    Bug Fix(es):

    * The kernel-rt packages have been upgraded to the 3.10.0-693.43.1 source tree, which provides a number of     bug fixes over the previous version. (BZ#1632422)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

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

The following security bugs were fixed :

CVE-2018-3620: Local attackers on baremetal systems could use speculative code patterns on hyperthreaded processors to read data present in the L1 Datacache used by other hyperthreads on the same CPU core, potentially leaking sensitive data. (bnc#1087081).

CVE-2018-3646: Local attackers in virtualized guest systems could use speculative code patterns on hyperthreaded processors to read data present in the L1 Datacache used by other hyperthreads on the same CPU core, potentially leaking sensitive data, even from other virtual machines or the host system. (bnc#1089343).

CVE-2018-5390 aka 'SegmentSmack': The Linux Kernel can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service (bnc#1102340).

CVE-2018-5391 aka 'FragmentSmack': A flaw in the IP packet reassembly could be used by remote attackers to consume lots of CPU time (bnc#1103097).

CVE-2018-14734: drivers/infiniband/core/ucma.c allowed ucma_leave_multicast to access a certain data structure after a cleanup step in ucma_process_join, which allowed attackers to cause a denial of service (use-after-free) (bnc#1103119).

CVE-2017-18344: The timer_create syscall implementation in kernel/time/posix-timers.c didn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allowed userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE) (bnc#1102851 bnc#1103580).

CVE-2018-9385: When printing the 'driver_override' option from with-in the amba driver, a very long line could expose one additional uninitialized byte (bnc#1100491).

CVE-2018-13053: The alarm_timer_nsleep function in kernel/time/alarmtimer.c had an integer overflow via a large relative timeout because ktime_add_safe is not used (bnc#1099924).

CVE-2018-13405: The inode_init_owner function in fs/inode.c allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group.
The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416).

CVE-2018-13406: An integer overflow in the uvesafb_setcmap function in drivers/video/fbdev/uvesafb.c could result in local attackers being able to crash the kernel or potentially elevate privileges because kmalloc_array is not used (bnc#1098016 1100418).

CVE-2018-5814: Multiple race condition errors when handling probe, disconnect, and rebind operations could be exploited to trigger a use-after-free condition or a NULL pointer dereference by sending multiple USB over IP packets (bnc#1096480).

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 remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3096 advisory.

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

    Security Fix(es):

    * A flaw named FragmentSmack was found in the way the Linux kernel handled reassembly of fragmented IPv4     and IPv6 packets. A remote attacker could use this flaw to trigger time and calculation expensive fragment     reassembly algorithm by sending specially crafted packets which could lead to a CPU saturation and hence a     denial of service on the system. (CVE-2018-5391)

    * kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c (CVE-2017-18344)

    * kernel: Integer overflow in udl_fb_mmap() can allow attackers to execute code in kernel space     (CVE-2018-8781)

    * kernel: MIDI driver race condition leads to a double-free (CVE-2018-10902)

    * kernel: Missing check in inode_init_owner() does not clear SGID bit on non-directories for non-members     (CVE-2018-13405)

    * kernel: AIO write triggers integer overflow in some protocols (CVE-2015-8830)

    * kernel: Use-after-free in snd_pcm_info function in ALSA subsystem potentially leads to privilege     escalation (CVE-2017-0861)

    * kernel: Handling of might_cancel queueing is not properly pretected against race (CVE-2017-10661)

    * kernel: Salsa20 encryption algorithm does not correctly handle zero-length inputs allowing local     attackers to cause denial of service (CVE-2017-17805)

    * kernel: Inifinite loop vulnerability in madvise_willneed() function allows local denial of service     (CVE-2017-18208)

    * kernel: fuse-backed file mmap-ed onto process cmdline arguments causes denial of service (CVE-2018-1120)

    * kernel: a null pointer dereference in dccp_write_xmit() leads to a system crash (CVE-2018-1130)

    * kernel: drivers/block/loop.c mishandles lo_release serialization allowing denial of service     (CVE-2018-5344)

    * kernel: Missing length check of payload in _sctp_make_chunk() function allows denial of service     (CVE-2018-5803)

    * kernel: buffer overflow in drivers/net/wireless/ath/wil6210/wmi.c:wmi_set_ie() may lead to memory     corruption (CVE-2018-5848)

    * kernel: out-of-bound write in ext4_init_block_bitmap function with a crafted ext4 image (CVE-2018-10878)

    * kernel: Improper validation in bnx2x network card driver can allow for denial of service attacks via     crafted packet (CVE-2018-1000026)

    * kernel: Information leak when handling NM entries containing NUL (CVE-2016-4913)

    * kernel: Mishandling mutex within libsas allowing local Denial of Service (CVE-2017-18232)

    * kernel: NULL pointer dereference in ext4_process_freed_data() when mounting crafted ext4 image     (CVE-2018-1092)

    * kernel: NULL pointer dereference in ext4_xattr_inode_hash() causes crash with crafted ext4 image     (CVE-2018-1094)

    * kernel: vhost: Information disclosure in vhost.c:vhost_new_msg() (CVE-2018-1118)

    * kernel: Denial of service in resv_map_release function in mm/hugetlb.c (CVE-2018-7740)

    * kernel: Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c     (CVE-2018-7757)

    * kernel: Invalid pointer dereference in xfs_ilock_attr_map_shared() when mounting crafted xfs image     allowing denial of service (CVE-2018-10322)

    * kernel: use-after-free detected in ext4_xattr_set_entry with a crafted file (CVE-2018-10879)

    * kernel: out-of-bound access in ext4_get_group_info() when mounting and operating a crafted ext4 image     (CVE-2018-10881)

    * kernel: stack-out-of-bounds write in jbd2_journal_dirty_metadata function (CVE-2018-10883)

    * kernel: incorrect memory bounds check in drivers/cdrom/cdrom.c (CVE-2018-10940)

    Red Hat would like to thank Juha-Matti Tilli (Aalto University - Department of Communications and     Networking and Nokia Bell Labs) for reporting CVE-2018-5391; Trend Micro Zero Day Initiative for reporting     CVE-2018-10902; Qualys Research Labs for reporting CVE-2018-1120; Evgenii Shatokhin (Virtuozzo Team) for     reporting CVE-2018-1130; and Wen Xu for reporting CVE-2018-1092 and CVE-2018-1094.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
111839	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2387-1) (Foreshadow)	Nessus	SuSE Local Security Checks	2018/8/17	2024/8/16	high
118785	RHEL 7 : kernel (RHSA-2018:3459)	Nessus	Red Hat Local Security Checks	2018/11/7	2024/4/27	medium
120071	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2018:2223-1)	Nessus	SuSE Local Security Checks	2019/1/2	2021/3/10	medium
248714	Linux Distros Unpatched Vulnerability : CVE-2017-18344	Nessus	Misc.	2025/8/12	2025/8/12	medium
287801	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003188)	Nessus	Unity Linux Local Security Checks	2026/1/15	2026/2/10	medium
118946	RHEL 7 : kernel (RHSA-2018:3540)	Nessus	Red Hat Local Security Checks	2018/11/14	2026/1/26	high
118948	RHEL 7 : kernel (RHSA-2018:3591)	Nessus	Red Hat Local Security Checks	2018/11/14	2026/1/26	high
119112	RHEL 6 : kernel-rt (RHSA-2018:3586)	Nessus	Red Hat Local Security Checks	2018/11/23	2026/1/26	high
118283	SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2344-2) (Foreshadow)	Nessus	SuSE Local Security Checks	2018/10/22	2024/7/30	high
118528	RHEL 7 : kernel-rt (RHSA-2018:3096)	Nessus	Red Hat Local Security Checks	2018/10/31	2025/3/16	high

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