Security update for the Linux Kernel (Live Patch 21 for SLE 15 SP1)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 21 for SLE 15 SP1)
Announcement ID: SUSE-SU-2021:2542-1
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-SP2
  • SUSE Linux Enterprise Module for Live Patching 15-SP1

An update that fixes three vulnerabilities is now available.

Description:

This update for the Linux Kernel 4.12.14-197_78 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-SP2:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2021-2542=1 SUSE-SLE-Module-Live-Patching-15-SP2-2021-2543=1 SUSE-SLE-Module-Live-Patching-15-SP2-2021-2544=1
  • SUSE Linux Enterprise Module for Live Patching 15-SP1:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2021-2541=1

Package List:

  • SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x x86_64):
    • kernel-livepatch-5_3_18-24_43-default-9-2.2
    • kernel-livepatch-5_3_18-24_43-default-debuginfo-9-2.2
    • kernel-livepatch-5_3_18-24_46-default-9-2.2
    • kernel-livepatch-5_3_18-24_46-default-debuginfo-9-2.2
    • kernel-livepatch-5_3_18-24_49-default-8-2.2
    • kernel-livepatch-5_3_18-24_49-default-debuginfo-8-2.2
    • kernel-livepatch-SLE15-SP2_Update_10-debugsource-8-2.2
    • kernel-livepatch-SLE15-SP2_Update_8-debugsource-9-2.2
    • kernel-livepatch-SLE15-SP2_Update_9-debugsource-9-2.2
  • SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):
    • kernel-livepatch-4_12_14-197_78-default-9-2.2

References: