Security update for the Linux Kernel (Live Patch 37 for SLE 15 SP3)

Announcement ID:	SUSE-SU-2023:4839-1
Rating:	important
References:	bsc#1215097 bsc#1215519
Cross-References:	CVE-2023-2163 CVE-2023-3777
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 ): 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N 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 15.3 SUSE Linux Enterprise High Performance Computing 15 SP3 SUSE Linux Enterprise Live Patching 15-SP3 SUSE Linux Enterprise Micro 5.1 SUSE Linux Enterprise Micro 5.2 SUSE Linux Enterprise Server 15 SP3 SUSE Linux Enterprise Server for SAP Applications 15 SP3

An update that solves two vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 5.3.18-150300_59_138 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:

• openSUSE Leap 15.3
  zypper in -t patch SUSE-2023-4839=1
• SUSE Linux Enterprise Live Patching 15-SP3
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2023-4839=1

Package List:

• openSUSE Leap 15.3 (ppc64le s390x x86_64)
  • kernel-livepatch-5_3_18-150300_59_138-default-debuginfo-3-150300.2.1
  • kernel-livepatch-SLE15-SP3_Update_37-debugsource-3-150300.2.1
  • kernel-livepatch-5_3_18-150300_59_138-default-3-150300.2.1
• openSUSE Leap 15.3 (x86_64)
  • kernel-livepatch-5_3_18-150300_59_138-preempt-debuginfo-3-150300.2.1
  • kernel-livepatch-5_3_18-150300_59_138-preempt-3-150300.2.1
• SUSE Linux Enterprise Live Patching 15-SP3 (ppc64le s390x x86_64)
  • kernel-livepatch-5_3_18-150300_59_138-default-3-150300.2.1

References:

• https://www.suse.com/security/cve/CVE-2023-2163.html
• https://www.suse.com/security/cve/CVE-2023-3777.html
• https://bugzilla.suse.com/show_bug.cgi?id=1215097
• https://bugzilla.suse.com/show_bug.cgi?id=1215519