Security update for the Linux Kernel (Live Patch 30 for SUSE Linux Enterprise 15 SP5)

Announcement ID:	SUSE-SU-2026:1733-1
Release Date:	2026-05-07T09:04:22Z
Rating:	important
References:	bsc#1252048 bsc#1258005 bsc#1258073 bsc#1258655 bsc#1259126 bsc#1263689
Cross-References:	CVE-2025-38375 CVE-2025-39977 CVE-2025-71066 CVE-2026-23004 CVE-2026-23204 CVE-2026-31431
CVSS scores:	CVE-2025-38375 ( 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-2025-38375 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2025-38375 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2025-39977 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2025-39977 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2025-71066 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-23004 ( 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-2026-23004 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-23004 ( NVD ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2026-23004 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-23204 ( SUSE ): 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVE-2026-23204 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-23204 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVE-2026-23204 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVE-2026-31431 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-31431 ( 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 15.4 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 six vulnerabilities can now be installed.

Description:

This update for the SUSE Linux Enterprise kernel 5.14.21-150500.55.121 fixes various security issues

The following security issues were fixed:

• CVE-2025-38375: virtio-net: ensure the received length does not exceed allocated size (bsc#1258073).
• CVE-2025-39977: futex: Prevent use-after-free during requeue-PI (bsc#1252048).
• CVE-2025-71066: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (bsc#1258005).
• CVE-2026-23004: dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list() (bsc#1258655).
• CVE-2026-23204: net/sched: cls_u32: use skb_header_pointer_careful() (bsc#1259126).
• CVE-2026-31431: crypto: algif_aead - Revert to operating out-of-place (bsc#1263689).

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 15.4
  zypper in -t patch SUSE-2026-1733=1 SUSE-2026-1734=1
• SUSE Linux Enterprise Live Patching 15-SP4
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-1733=1 SUSE-SLE-Module-Live-Patching-15-SP4-2026-1734=1
• openSUSE Leap 15.5
  zypper in -t patch SUSE-2026-1739=1 SUSE-2026-1746=1 SUSE-2026-1747=1 SUSE-2026-1738=1
• SUSE Linux Enterprise Live Patching 15-SP5
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-1738=1 SUSE-SLE-Module-Live-Patching-15-SP5-2026-1739=1 SUSE-SLE-Module-Live-Patching-15-SP5-2026-1746=1 SUSE-SLE-Module-Live-Patching-15-SP5-2026-1747=1

Package List:

• openSUSE Leap 15.4 (ppc64le s390x x86_64)
  • kernel-livepatch-5_14_21-150400_24_184-default-6-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_176-default-12-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_184-default-debuginfo-6-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_46-debugsource-6-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_44-debugsource-12-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_176-default-debuginfo-12-150400.2.1
• SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
  • kernel-livepatch-5_14_21-150400_24_184-default-6-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_176-default-12-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_184-default-debuginfo-6-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_46-debugsource-6-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_44-debugsource-12-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_176-default-debuginfo-12-150400.2.1
• openSUSE Leap 15.5 (ppc64le s390x x86_64)
  • kernel-livepatch-5_14_21-150500_55_103-default-debuginfo-18-150500.2.1
  • kernel-livepatch-SLE15-SP5_Update_29-debugsource-14-150500.2.1
  • kernel-livepatch-SLE15-SP5_Update_26-debugsource-18-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_121-default-11-150500.2.1
  • kernel-livepatch-SLE15-SP5_Update_27-debugsource-17-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_121-default-debuginfo-11-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_110-default-debuginfo-17-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_116-default-debuginfo-14-150500.2.1
  • kernel-livepatch-SLE15-SP5_Update_30-debugsource-11-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_110-default-17-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_103-default-18-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_116-default-14-150500.2.1
• SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
  • kernel-livepatch-5_14_21-150500_55_103-default-debuginfo-18-150500.2.1
  • kernel-livepatch-SLE15-SP5_Update_26-debugsource-18-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_121-default-11-150500.2.1
  • kernel-livepatch-SLE15-SP5_Update_27-debugsource-17-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_121-default-debuginfo-11-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_110-default-debuginfo-17-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_116-default-debuginfo-14-150500.2.1
  • kernel-livepatch-SLE15-SP5_Update_30-debugsource-11-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_110-default-17-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_103-default-18-150500.2.1
  • kernel-livepatch-5_14_21-150500_55_116-default-14-150500.2.1
• SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x)
  • kernel-livepatch-SLE15-SP5_Update_29-debugsource-14-150500.2.1

References:

• https://www.suse.com/security/cve/CVE-2025-38375.html
• https://www.suse.com/security/cve/CVE-2025-39977.html
• https://www.suse.com/security/cve/CVE-2025-71066.html
• https://www.suse.com/security/cve/CVE-2026-23004.html
• https://www.suse.com/security/cve/CVE-2026-23204.html
• https://www.suse.com/security/cve/CVE-2026-31431.html
• https://bugzilla.suse.com/show_bug.cgi?id=1252048
• https://bugzilla.suse.com/show_bug.cgi?id=1258005
• https://bugzilla.suse.com/show_bug.cgi?id=1258073
• https://bugzilla.suse.com/show_bug.cgi?id=1258655
• https://bugzilla.suse.com/show_bug.cgi?id=1259126
• https://bugzilla.suse.com/show_bug.cgi?id=1263689