Security update for the Linux Kernel (Live Patch 30 for SLE 12 SP5)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 30 for SLE 12 SP5)
Announcement ID: SUSE-SU-2022:2438-1
Rating: important
References: #1199697 #1200059 #1200608
Cross-References:CVE-2022-1729 CVE-2022-20154 CVE-2022-21499
Affected Products:
  • SUSE Linux Enterprise Live Patching 12-SP4
  • SUSE Linux Enterprise Live Patching 12-SP5

An update that fixes three vulnerabilities is now available.

Description:

This update for the Linux Kernel 4.12.14-122_116 fixes several issues.
The following security issues were fixed:

  • CVE-2022-20154: Fixed a use after free due to a race condition in lock_sock_nested of sock.c. This could lead to local escalation of privilege with System execution privileges needed (bsc#1200599).
  • CVE-2022-21499: Reinforced the kernel lockdown feature, until now it's been trivial to break out of it with kgdb or kdb (bsc#1199426).
  • CVE-2022-1729: Fixed a sys_perf_event_open() race condition against self (bsc#1199507).

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 Live Patching 12-SP5:
    zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2022-2437=1 SUSE-SLE-Live-Patching-12-SP5-2022-2438=1 SUSE-SLE-Live-Patching-12-SP5-2022-2442=1
  • SUSE Linux Enterprise Live Patching 12-SP4:
    zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2022-2433=1

Package List:

  • SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64):
    • kgraft-patch-4_12_14-122_116-default-5-2.3
    • kgraft-patch-4_12_14-122_91-default-14-2.3
    • kgraft-patch-4_12_14-122_98-default-12-2.3
  • SUSE Linux Enterprise Live Patching 12-SP4 (ppc64le s390x x86_64):
    • kgraft-patch-4_12_14-95_93-default-6-2.3

References: