SUSE-SU-2019:3261-1: important: Security update for the Linux Kernel (Live Patch 30 for SLE 12 SP2)

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

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 30 for SLE 12 SP2)
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Announcement ID:    SUSE-SU-2019:3261-1
Rating:             important
References:         #1153108 #1156321 #1156331 #1157770 
Cross-References:   CVE-2018-20856 CVE-2019-10220 CVE-2019-13272
                   
Affected Products:
                    SUSE Linux Enterprise Server for SAP 12-SP2
                    SUSE Linux Enterprise Server 12-SP2-LTSS
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   An update that solves three vulnerabilities and has one
   errata is now available.

Description:

   This update for the Linux Kernel 4.4.121-92_114 fixes several issues.

   The following security issues were fixed:

   - CVE-2018-20856: Fixed a use-after-free in __blk_drain_queue() due to an
     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-2019-10220: Fixed an issue where samba servers could inject relative
     paths in directory entry lists (bsc#1153108).

   The following bugs were fixed:

   - Fixed boot up hang revealed by int3 self test (bsc#1157770).


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-SP2-2019-3261=1 SUSE-SLE-SAP-12-SP2-2019-3262=1

   - SUSE Linux Enterprise Server 12-SP2-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-3261=1 SUSE-SLE-SERVER-12-SP2-2019-3262=1



Package List:

   - SUSE Linux Enterprise Server for SAP 12-SP2 (ppc64le x86_64):

      kgraft-patch-4_4_121-92_114-default-6-2.1
      kgraft-patch-4_4_121-92_117-default-5-2.1

   - SUSE Linux Enterprise Server 12-SP2-LTSS (ppc64le x86_64):

      kgraft-patch-4_4_121-92_114-default-6-2.1
      kgraft-patch-4_4_121-92_117-default-5-2.1


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://bugzilla.suse.com/1153108
   https://bugzilla.suse.com/1156321
   https://bugzilla.suse.com/1156331
   https://bugzilla.suse.com/1157770