SUSE-SU-2018:2416-1: important: Security update for the Linux Kernel (Live Patch 9 for SLE 12 SP3)

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 9 for SLE 12 SP3)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:2416-1
Rating:             important
References:         #1097108 #1099306 #1103203 
Cross-References:   CVE-2017-18344 CVE-2018-10853 CVE-2018-3646
                   
Affected Products:
                    SUSE Linux Enterprise Server for SAP 12-SP2
                    SUSE Linux Enterprise Server 12-SP2-LTSS
                    SUSE Linux Enterprise Live Patching 12-SP3
______________________________________________________________________________

   An update that fixes three vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.4.114-94_14 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-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).


Patch Instructions:

   To install this SUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Server for SAP 12-SP2:

      zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-1667=1 SUSE-SLE-SAP-12-SP2-2018-1668=1

   - SUSE Linux Enterprise Server 12-SP2-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-1667=1 SUSE-SLE-SERVER-12-SP2-2018-1668=1

   - SUSE Linux Enterprise Live Patching 12-SP3:

      zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2018-1672=1 SUSE-SLE-Live-Patching-12-SP3-2018-1673=1 SUSE-SLE-Live-Patching-12-SP3-2018-1674=1 SUSE-SLE-Live-Patching-12-SP3-2018-1675=1 SUSE-SLE-Live-Patching-12-SP3-2018-1676=1 SUSE-SLE-Live-Patching-12-SP3-2018-1677=1



Package List:

   - SUSE Linux Enterprise Server for SAP 12-SP2 (x86_64):

      kgraft-patch-4_4_103-92_53-default-8-2.1
      kgraft-patch-4_4_103-92_56-default-8-2.1

   - SUSE Linux Enterprise Server 12-SP2-LTSS (x86_64):

      kgraft-patch-4_4_103-92_53-default-8-2.1
      kgraft-patch-4_4_103-92_56-default-8-2.1

   - SUSE Linux Enterprise Live Patching 12-SP3 (ppc64le x86_64):

      kgraft-patch-4_4_103-6_33-default-8-2.1
      kgraft-patch-4_4_103-6_33-default-debuginfo-8-2.1
      kgraft-patch-4_4_103-6_38-default-8-2.1
      kgraft-patch-4_4_103-6_38-default-debuginfo-8-2.1
      kgraft-patch-4_4_114-94_11-default-6-2.1
      kgraft-patch-4_4_114-94_11-default-debuginfo-6-2.1
      kgraft-patch-4_4_114-94_14-default-6-2.1
      kgraft-patch-4_4_114-94_14-default-debuginfo-6-2.1
      kgraft-patch-4_4_92-6_30-default-8-2.1
      kgraft-patch-4_4_92-6_30-default-debuginfo-8-2.1

   - SUSE Linux Enterprise Live Patching 12-SP3 (x86_64):

      kgraft-patch-4_4_92-6_18-default-9-2.1
      kgraft-patch-4_4_92-6_18-default-debuginfo-9-2.1


References:

   https://www.suse.com/security/cve/CVE-2017-18344.html
   https://www.suse.com/security/cve/CVE-2018-10853.html
   https://www.suse.com/security/cve/CVE-2018-3646.html
   https://bugzilla.suse.com/1097108
   https://bugzilla.suse.com/1099306
   https://bugzilla.suse.com/1103203