Security update for the Linux Kernel RT (Live Patch 6 for SLE 15 SP5)

Announcement ID: SUSE-SU-2023:4776-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2023-2163 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  • CVE-2023-2163 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2023-3777 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2023-3777 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • openSUSE Leap 15.5
  • SUSE Linux Enterprise High Performance Computing 15 SP4
  • SUSE Linux Enterprise High Performance Computing 15 SP5
  • SUSE Linux Enterprise Live Patching 15-SP4
  • SUSE Linux Enterprise Live Patching 15-SP5
  • SUSE Linux Enterprise Micro 5.3
  • SUSE Linux Enterprise Micro 5.4
  • SUSE Linux Enterprise Micro 5.5
  • SUSE Linux Enterprise Real Time 15 SP4
  • SUSE Linux Enterprise Real Time 15 SP5
  • SUSE Linux Enterprise Server 15 SP4
  • SUSE Linux Enterprise Server 15 SP5
  • SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • SUSE Linux Enterprise Server for SAP Applications 15 SP5

An update that solves two vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 5.14.21-150500_13_21 fixes several issues.

The following security issues were fixed:

  • CVE-2023-3777: Fixed a use-after-free vulnerability in netfilter: nf_tables component can be exploited to achieve local privilege escalation. (bsc#1215097)
  • CVE-2023-2163: Fixed an incorrect verifier pruning in BPF that could lead to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape. (bsc#1215519)

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-SP4
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2023-4776=1
  • openSUSE Leap 15.5
    zypper in -t patch SUSE-2023-4780=1
  • SUSE Linux Enterprise Live Patching 15-SP5
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2023-4780=1

Package List:

  • SUSE Linux Enterprise Live Patching 15-SP4 (x86_64)
    • kernel-livepatch-5_14_21-150400_15_56-rt-2-150400.2.1
    • kernel-livepatch-5_14_21-150400_15_56-rt-debuginfo-2-150400.2.1
    • kernel-livepatch-SLE15-SP4-RT_Update_14-debugsource-2-150400.2.1
  • openSUSE Leap 15.5 (x86_64)
    • kernel-livepatch-5_14_21-150500_13_21-rt-2-150500.2.1
    • kernel-livepatch-SLE15-SP5-RT_Update_6-debugsource-2-150500.2.1
    • kernel-livepatch-5_14_21-150500_13_21-rt-debuginfo-2-150500.2.1
  • SUSE Linux Enterprise Live Patching 15-SP5 (x86_64)
    • kernel-livepatch-5_14_21-150500_13_21-rt-2-150500.2.1
    • kernel-livepatch-5_14_21-150500_13_21-rt-debuginfo-2-150500.2.1

References: