Security update for the Linux Kernel RT (Live Patch 2 for SUSE Linux Enterprise 15 SP7)

Announcement ID:	SUSE-SU-2026:3316-1
Release Date:	2026-07-27T19:36:28Z
Rating:	important
References:	bsc#1262404 bsc#1264060 bsc#1266970 bsc#1270060 bsc#1271370 bsc#1271648
Cross-References:	CVE-2026-23240 CVE-2026-31738 CVE-2026-43038 CVE-2026-46113 CVE-2026-53359 CVE-2026-53366
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 ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2026-46113 ( 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 CVE-2026-53366 ( SUSE ): 9.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVE-2026-53366 ( SUSE ): 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2026-53366 ( 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 15.6 SUSE Linux Enterprise Live Patching 15-SP6 SUSE Linux Enterprise Live Patching 15-SP7 SUSE Linux Enterprise Real Time 15 SP6 SUSE Linux Enterprise Real Time 15 SP7 SUSE Linux Enterprise Server 15 SP6 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP6 SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves six vulnerabilities can now be installed.

Description:

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.8 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).
• CVE-2026-53366: ipv4: account for fraggap on the paged allocation path (bsc#1271370).

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-SP6
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-3316=1 SUSE-SLE-Module-Live-Patching-15-SP6-2026-3315=1 SUSE-SLE-Module-Live-Patching-15-SP6-2026-3308=1 SUSE-SLE-Module-Live-Patching-15-SP6-2026-3307=1 SUSE-SLE-Module-Live-Patching-15-SP6-2026-3314=1 SUSE-SLE-Module-Live-Patching-15-SP6-2026-3311=1
• SUSE Linux Enterprise Live Patching 15-SP7
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP7-2026-3303=1 SUSE-SLE-Module-Live-Patching-15-SP7-2026-3304=1 SUSE-SLE-Module-Live-Patching-15-SP7-2026-3309=1 SUSE-SLE-Module-Live-Patching-15-SP7-2026-3312=1 SUSE-SLE-Module-Live-Patching-15-SP7-2026-3306=1 SUSE-SLE-Module-Live-Patching-15-SP7-2026-3310=1 SUSE-SLE-Module-Live-Patching-15-SP7-2026-3305=1 SUSE-SLE-Module-Live-Patching-15-SP7-2026-3313=1
• openSUSE Leap 15.6
  zypper in -t patch SUSE-2026-3316=1 SUSE-2026-3315=1 SUSE-2026-3308=1 SUSE-2026-3307=1 SUSE-2026-3314=1 SUSE-2026-3311=1

Package List:

• openSUSE Leap 15.6 (ppc64le s390x x86_64)
  • kernel-livepatch-SLE15-SP6_Update_14-debugsource-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_81-default-10-150600.2.1
  • kernel-livepatch-SLE15-SP6_Update_18-debugsource-10-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_73-default-12-150600.2.1
  • kernel-livepatch-SLE15-SP6_Update_16-debugsource-12-150600.2.1
  • kernel-livepatch-SLE15-SP6_Update_15-debugsource-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_65-default-debuginfo-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_70-default-debuginfo-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_70-default-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_78-default-debuginfo-10-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_60-default-debuginfo-19-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_73-default-debuginfo-12-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_60-default-19-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_65-default-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_81-default-debuginfo-10-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_78-default-10-150600.2.1
  • kernel-livepatch-SLE15-SP6_Update_13-debugsource-19-150600.2.1
  • kernel-livepatch-SLE15-SP6_Update_17-debugsource-10-150600.2.1
• SUSE Linux Enterprise Live Patching 15-SP7 (ppc64le s390x x86_64)
  • kernel-livepatch-SLE15-SP7_Update_5-debugsource-12-150700.2.1
  • kernel-livepatch-6_4_0-150700_53_16-default-15-150700.2.1
  • kernel-livepatch-6_4_0-150700_53_19-default-debuginfo-12-150700.2.1
  • kernel-livepatch-6_4_0-150700_53_16-default-debuginfo-15-150700.2.1
  • kernel-livepatch-6_4_0-150700_53_19-default-12-150700.2.1
  • kernel-livepatch-SLE15-SP7_Update_4-debugsource-15-150700.2.1
• SUSE Linux Enterprise Live Patching 15-SP7 (x86_64)
  • kernel-livepatch-6_4_0-150700_7_22-rt-11-150700.2.1
  • kernel-livepatch-SLE15-SP7-RT_Update_2-debugsource-19-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_8-rt-debuginfo-19-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_13-rt-debuginfo-15-150700.2.1
  • kernel-livepatch-SLE15-SP7-RT_Update_6-debugsource-11-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_8-rt-19-150700.2.1
  • kernel-livepatch-SLE15-SP7-RT_Update_4-debugsource-15-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_13-rt-15-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_25-rt-10-150700.2.1
  • kernel-livepatch-SLE15-SP7-RT_Update_7-debugsource-10-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_22-rt-debuginfo-11-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_16-rt-15-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_19-rt-debuginfo-12-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_19-rt-12-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_25-rt-debuginfo-10-150700.2.1
  • kernel-livepatch-SLE15-SP7-RT_Update_3-debugsource-15-150700.2.1
  • kernel-livepatch-6_4_0-150700_7_16-rt-debuginfo-15-150700.2.1
  • kernel-livepatch-SLE15-SP7-RT_Update_5-debugsource-12-150700.2.1
• SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64)
  • kernel-livepatch-SLE15-SP6_Update_14-debugsource-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_81-default-10-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_78-default-10-150600.2.1
  • kernel-livepatch-SLE15-SP6_Update_18-debugsource-10-150600.2.1
  • kernel-livepatch-SLE15-SP6_Update_13-debugsource-19-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_73-default-12-150600.2.1
  • kernel-livepatch-SLE15-SP6_Update_16-debugsource-12-150600.2.1
  • kernel-livepatch-SLE15-SP6_Update_15-debugsource-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_73-default-debuginfo-12-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_70-default-debuginfo-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_70-default-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_78-default-debuginfo-10-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_60-default-debuginfo-19-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_60-default-19-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_65-default-15-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_81-default-debuginfo-10-150600.2.1
  • kernel-livepatch-6_4_0-150600_23_65-default-debuginfo-15-150600.2.1
  • kernel-livepatch-SLE15-SP6_Update_17-debugsource-10-150600.2.1

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://www.suse.com/security/cve/CVE-2026-53366.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=1271370
• https://bugzilla.suse.com/show_bug.cgi?id=1271648