Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP5)

Announcement ID:	SUSE-SU-2023:4325-1
Rating:	important
References:	bsc#1215118 bsc#1215440
Cross-References:	CVE-2023-4147 CVE-2023-4623
CVSS scores:	CVE-2023-4147 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-4147 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-4623 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-4623 ( 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 SP5 SUSE Linux Enterprise Live Patching 15-SP5 SUSE Linux Enterprise Micro 5.5 SUSE Linux Enterprise Real Time 15 SP5 SUSE Linux Enterprise Server 15 SP5 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_55_19 fixes several issues.

The following security issues were fixed:

• CVE-2023-4147: Fixed use-after-free in nf_tables_newrule (bsc#1215118).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215440).

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-SP5
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2023-4325=1
• openSUSE Leap 15.5
  zypper in -t patch SUSE-2023-4325=1

Package List:

• SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
  • kernel-livepatch-5_14_21-150500_55_19-default-debuginfo-3-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_19-default-3-150500.2.1
  • kernel-livepatch-SLE15-SP5_Update_3-debugsource-3-150500.2.1
• openSUSE Leap 15.5 (ppc64le s390x x86_64)
  • kernel-livepatch-5_14_21-150500_55_19-default-debuginfo-3-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_19-default-3-150500.2.1
  • kernel-livepatch-SLE15-SP5_Update_3-debugsource-3-150500.2.1

References:

• https://www.suse.com/security/cve/CVE-2023-4147.html
• https://www.suse.com/security/cve/CVE-2023-4623.html
• https://bugzilla.suse.com/show_bug.cgi?id=1215118
• https://bugzilla.suse.com/show_bug.cgi?id=1215440