Security update for the Linux Kernel (Live Patch 49 for SUSE Linux Enterprise 15 SP4)

Announcement ID:	SUSE-SU-2026:2158-1
Release Date:	2026-05-31T11:34:13Z
Rating:	important
References:	bsc#1259798 bsc#1260908 bsc#1264096 bsc#1265224 bsc#1265384
Cross-References:	CVE-2025-54518 CVE-2026-23243 CVE-2026-23274 CVE-2026-46300 CVE-2026-46333
CVSS scores:	CVE-2025-54518 ( 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-2025-54518 ( SUSE ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2025-54518 ( NVD ): 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVE-2026-23243 ( 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-2026-23243 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-23243 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-23274 ( 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-2026-23274 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-23274 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-46300 ( SUSE ): 8.6 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2026-46300 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2026-46300 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-46300 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-46333 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-46333 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVE-2026-46333 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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 5.14.21-150400.24.197 fixes various security issues

The following security issues were fixed:

• CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption (bsc#1264096).
• CVE-2026-23243: RDMA/umad: Reject negative data_len in ib_umad_write (bsc#1259798).
• CVE-2026-23274: netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels (bsc#1260908).
• CVE-2026-46300: FragNesia attack: another xfrm/esp based local root exploit (bsc#1265224).
• CVE-2026-46333: ptrace: slightly saner 'get_dumpable()' logic (bsc#1265384).

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-2026-2158=1 SUSE-2026-2161=1 SUSE-2026-2156=1 SUSE-2026-2154=1
• SUSE Linux Enterprise Live Patching 15-SP4
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-2158=1 SUSE-SLE-Module-Live-Patching-15-SP4-2026-2161=1 SUSE-SLE-Module-Live-Patching-15-SP4-2026-2156=1 SUSE-SLE-Module-Live-Patching-15-SP4-2026-2154=1

Package List:

• openSUSE Leap 15.4 (ppc64le s390x x86_64)
  • kernel-livepatch-5_14_21-150400_24_187-default-debuginfo-8-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_49-debugsource-4-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_187-default-8-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_194-default-6-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_184-default-8-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_197-default-debuginfo-4-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_184-default-debuginfo-8-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_48-debugsource-6-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_197-default-4-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_47-debugsource-8-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_194-default-debuginfo-6-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_46-debugsource-8-150400.2.1
• SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
  • kernel-livepatch-5_14_21-150400_24_187-default-debuginfo-8-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_49-debugsource-4-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_187-default-8-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_194-default-6-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_184-default-8-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_197-default-debuginfo-4-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_184-default-debuginfo-8-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_48-debugsource-6-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_197-default-4-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_47-debugsource-8-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_194-default-debuginfo-6-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_46-debugsource-8-150400.2.1

References:

• https://www.suse.com/security/cve/CVE-2025-54518.html
• https://www.suse.com/security/cve/CVE-2026-23243.html
• https://www.suse.com/security/cve/CVE-2026-23274.html
• https://www.suse.com/security/cve/CVE-2026-46300.html
• https://www.suse.com/security/cve/CVE-2026-46333.html
• https://bugzilla.suse.com/show_bug.cgi?id=1259798
• https://bugzilla.suse.com/show_bug.cgi?id=1260908
• https://bugzilla.suse.com/show_bug.cgi?id=1264096
• https://bugzilla.suse.com/show_bug.cgi?id=1265224
• https://bugzilla.suse.com/show_bug.cgi?id=1265384