Security update for the Linux Kernel (Live Patch 46 for SUSE Linux Enterprise 15 SP4)

Announcement ID:	SUSE-SU-2026:3345-1
Release Date:	2026-07-28T12:12:16Z
Rating:	important
References:	bsc#1262404 bsc#1264060 bsc#1266970 bsc#1270060 bsc#1271648
Cross-References:	CVE-2026-23240 CVE-2026-31738 CVE-2026-43038 CVE-2026-46113 CVE-2026-53359
CVSS scores:	CVE-2026-23240 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2026-23240 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-23240 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-31738 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2026-31738 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-31738 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2026-43038 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVE-2026-43038 ( NVD ): 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H CVE-2026-43038 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-46113 ( SUSE ): 9.3 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVE-2026-46113 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2026-46113 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2026-53359 ( SUSE ): 9.3 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVE-2026-53359 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2026-53359 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Products:	openSUSE Leap 15.4 SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise Live Patching 15-SP4 SUSE Linux Enterprise Micro 5.3 SUSE Linux Enterprise Micro 5.4 SUSE Linux Enterprise Real Time 15 SP4 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP4

An update that solves five vulnerabilities can now be installed.

Description:

This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.184 fixes various security issues:

The following security issues were fixed:

• CVE-2026-23240: tls: Fix race condition in tls_sw_cancel_work_tx() (bsc#1262404).
• CVE-2026-31738: vxlan: validate ND option lengths in vxlan_na_create (bsc#1264060).
• CVE-2026-43038: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() (bsc#1271648).
• CVE-2026-46113: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (bsc#1266970).
• CVE-2026-53359: KVM: x86: Fix shadow paging use-after-free due to unexpected role (bsc#1270060).

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-SP4-2026-3347=1 SUSE-SLE-Module-Live-Patching-15-SP4-2026-3348=1 SUSE-SLE-Module-Live-Patching-15-SP4-2026-3353=1 SUSE-SLE-Module-Live-Patching-15-SP4-2026-3345=1 SUSE-SLE-Module-Live-Patching-15-SP4-2026-3352=1
• openSUSE Leap 15.4
  zypper in -t patch SUSE-2026-3347=1 SUSE-2026-3348=1 SUSE-2026-3353=1 SUSE-2026-3345=1 SUSE-2026-3352=1

Package List:

• SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
  • kernel-livepatch-SLE15-SP4_Update_53-debugsource-4-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_50-debugsource-7-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_200-default-debuginfo-7-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_214-default-4-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_200-default-7-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_209-default-debuginfo-5-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_214-default-debuginfo-4-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_49-debugsource-7-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_197-default-debuginfo-7-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_46-debugsource-11-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_197-default-7-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_184-default-debuginfo-11-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_209-default-5-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_52-debugsource-5-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_184-default-11-150400.2.1
• openSUSE Leap 15.4 (ppc64le s390x x86_64)
  • kernel-livepatch-SLE15-SP4_Update_53-debugsource-4-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_50-debugsource-7-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_200-default-debuginfo-7-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_214-default-4-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_200-default-7-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_209-default-debuginfo-5-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_214-default-debuginfo-4-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_49-debugsource-7-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_197-default-debuginfo-7-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_46-debugsource-11-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_184-default-debuginfo-11-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_197-default-7-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_209-default-5-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_52-debugsource-5-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_184-default-11-150400.2.1

References:

• https://www.suse.com/security/cve/CVE-2026-23240.html
• https://www.suse.com/security/cve/CVE-2026-31738.html
• https://www.suse.com/security/cve/CVE-2026-43038.html
• https://www.suse.com/security/cve/CVE-2026-46113.html
• https://www.suse.com/security/cve/CVE-2026-53359.html
• https://bugzilla.suse.com/show_bug.cgi?id=1262404
• https://bugzilla.suse.com/show_bug.cgi?id=1264060
• https://bugzilla.suse.com/show_bug.cgi?id=1266970
• https://bugzilla.suse.com/show_bug.cgi?id=1270060
• https://bugzilla.suse.com/show_bug.cgi?id=1271648