Security update for the Linux Kernel (Live Patch 30 for SLE 12 SP2)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 30 for SLE 12 SP2)
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

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: