SUSE-SU-2019:3258-1: important: Security update for the Linux Kernel (Live Patch 25 for SLE 12 SP3)

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

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 25 for SLE 12 SP3)
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Announcement ID:    SUSE-SU-2019:3258-1
Rating:             important
References:         #1153108 #1156317 #1156321 #1156331 
Cross-References:   CVE-2018-20856 CVE-2019-10220 CVE-2019-13272
                    CVE-2019-15239
Affected Products:
                    SUSE Linux Enterprise Server for SAP 12-SP3
                    SUSE Linux Enterprise Server 12-SP3-LTSS
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   An update that fixes four vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.4.178-94_91 fixes several issues.

   The following security issues were fixed:

   - CVE-2018-20856: Fixed a use-after-free in block/blk-core.c due to
     improper error handling (bsc#1156331).
   - CVE-2019-13272: Fixed a privilege escalation from user to root due to
     improper handling of credentials by leveraging certain scenarios with a
     parent-child process relationship (bsc#1156321).
   - CVE-2019-15239: Fixed a vulnerability where a local attacker could have
     triggered multiple use-after-free conditions resulted in privilege
     escalation (bsc#1156317).
   - CVE-2019-10220: Fixed an issue where samba servers could inject relative
     paths in directory entry lists (bsc#1153108).


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-SP3:

      zypper in -t patch SUSE-SLE-SAP-12-SP3-2019-3256=1 SUSE-SLE-SAP-12-SP3-2019-3257=1 SUSE-SLE-SAP-12-SP3-2019-3258=1

   - SUSE Linux Enterprise Server 12-SP3-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP3-2019-3256=1 SUSE-SLE-SERVER-12-SP3-2019-3257=1 SUSE-SLE-SERVER-12-SP3-2019-3258=1



Package List:

   - SUSE Linux Enterprise Server for SAP 12-SP3 (ppc64le x86_64):

      kgraft-patch-4_4_175-94_79-default-7-2.5
      kgraft-patch-4_4_175-94_79-default-debuginfo-7-2.5
      kgraft-patch-4_4_176-94_88-default-6-2.5
      kgraft-patch-4_4_176-94_88-default-debuginfo-6-2.5
      kgraft-patch-4_4_178-94_91-default-6-2.5
      kgraft-patch-4_4_178-94_91-default-debuginfo-6-2.5

   - SUSE Linux Enterprise Server 12-SP3-LTSS (ppc64le x86_64):

      kgraft-patch-4_4_175-94_79-default-7-2.5
      kgraft-patch-4_4_175-94_79-default-debuginfo-7-2.5
      kgraft-patch-4_4_176-94_88-default-6-2.5
      kgraft-patch-4_4_176-94_88-default-debuginfo-6-2.5
      kgraft-patch-4_4_178-94_91-default-6-2.5
      kgraft-patch-4_4_178-94_91-default-debuginfo-6-2.5


References:

   https://www.suse.com/security/cve/CVE-2018-20856.html
   https://www.suse.com/security/cve/CVE-2019-10220.html
   https://www.suse.com/security/cve/CVE-2019-13272.html
   https://www.suse.com/security/cve/CVE-2019-15239.html
   https://bugzilla.suse.com/1153108
   https://bugzilla.suse.com/1156317
   https://bugzilla.suse.com/1156321
   https://bugzilla.suse.com/1156331