Security update for the Linux Kernel (Live Patch 9 for SLE 15 SP2)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 9 for SLE 15 SP2)
Announcement ID: SUSE-SU-2021:0359-1
Rating: important
References: #1179664 #1179779 #1180008
Cross-References:CVE-2020-29368 CVE-2020-29373 CVE-2020-29569
Affected Products:
  • SUSE Linux Enterprise Module for Live Patching 15-SP2

An update that fixes three vulnerabilities is now available.

Description:

This update for the Linux Kernel 5.3.18-24_46 fixes several issues.
The following security issues were fixed:

  • CVE-2020-29373: Fixed an issue where kernel unsafely handles the root directory during path lookups, and thus a process inside a mount namespace can escape to unintended filesystem locations (bsc#1179779).
  • CVE-2020-29569: Fixed a use after free due to a logic error (bsc#1180008).
  • CVE-2020-29368: Fixed an issue in copy-on-write implementation which could grant unintended write access because of a race condition in a THP mapcount check (bsc#1179664).

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-SP2-2021-359=1

Package List:

  • SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x x86_64):
    • kernel-livepatch-5_3_18-24_46-default-2-2.1
    • kernel-livepatch-5_3_18-24_46-default-debuginfo-2-2.1
    • kernel-livepatch-SLE15-SP2_Update_9-debugsource-2-2.1

References: