The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.143 to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2018-5390 aka 'SegmentSmack': Linux kernel could 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-2018-14734: drivers/infiniband/core/ucma.c in the     Linux kernel 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 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) (bnc#1102851 bnc#1103580).

  - 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).

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.

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SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:2328-1) (Foreshadow)

high Nessus Plugin ID 111746

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