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

Announcement ID: SUSE-SU-2021:0359-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2020-29368 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2020-29368 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2020-29373 ( SUSE ): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  • CVE-2020-29373 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2020-29569 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2020-29569 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Enterprise High Performance Computing 15 SP2
  • SUSE Linux Enterprise Live Patching 15-SP2
  • SUSE Linux Enterprise Server 15 SP2
  • SUSE Linux Enterprise Server for SAP Applications 15 SP2

An update that solves three vulnerabilities can now be installed.

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 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 15-SP2
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2021-359=1

Package List:

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

References: