Security update for the Linux Kernel (Live Patch 19 for SLE 15 SP1)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 19 for SLE 15 SP1)
Announcement ID: SUSE-SU-2021:2584-1
Rating: important
References: #1187052 #1188117 #1188257
Cross-References:CVE-2020-36385 CVE-2021-22555 CVE-2021-33909
Affected Products:
  • SUSE Linux Enterprise Module for Live Patching 15-SP1
  • SUSE Linux Enterprise Live Patching 12-SP4

An update that fixes three vulnerabilities is now available.

Description:

This update for the Linux Kernel 4.12.14-197_72 fixes several issues.
The following security issues were fixed:

  • CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that allows to andobtain full root privileges. (bsc#1188062)
  • CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/x_tables.c that could allow local provilege escalation. (bsc#1188116)
  • CVE-2020-36385: Fixed a use-after-free vulnerability reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called. (bnc#1187050)

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 Module for Live Patching 15-SP1:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2021-2585=1
  • SUSE Linux Enterprise Live Patching 12-SP4:
    zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2021-2584=1

Package List:

  • SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):
    • kernel-livepatch-4_12_14-197_72-default-9-2.2
  • SUSE Linux Enterprise Live Patching 12-SP4 (ppc64le s390x x86_64):
    • kgraft-patch-4_12_14-95_68-default-8-2.2

References: