Security update for the Linux Kernel

Announcement ID:	SUSE-SU-2026:1606-1
Release Date:	2026-04-24T11:50:26Z
Rating:	important
References:	bsc#1215492 bsc#1246057 bsc#1256675 bsc#1257773 bsc#1259797 bsc#1260005 bsc#1260009 bsc#1260347 bsc#1260562
Cross-References:	CVE-2025-38234 CVE-2025-68818 CVE-2026-23103 CVE-2026-23243 CVE-2026-23272 CVE-2026-23274 CVE-2026-23317
CVSS scores:	CVE-2025-38234 ( SUSE ): 5.7 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2025-38234 ( SUSE ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2025-38234 ( NVD ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2025-68818 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2026-23103 ( SUSE ): 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2026-23103 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2026-23103 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2026-23103 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 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-2026-23272 ( 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-2026-23272 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-23272 ( 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-2026-23317 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2026-23317 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-23317 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:	SUSE Linux Enterprise High Performance Computing 15 SP5 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 SUSE Linux Enterprise Live Patching 15-SP5 SUSE Linux Enterprise Micro 5.5 SUSE Linux Enterprise Real Time 15 SP5 SUSE Linux Enterprise Server 15 SP5 SUSE Linux Enterprise Server 15 SP5 LTSS SUSE Linux Enterprise Server for SAP Applications 15 SP5

An update that solves seven vulnerabilities and has two security fixes can now be installed.

Description:

The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues

The following security issues were fixed:

• CVE-2025-38234: sched/rt: Fix race in push_rt_task (bsc#1246057).
• CVE-2026-23103: ipvlan: Make the addrs_lock be per port (bsc#1257773).
• CVE-2026-23243: RDMA/umad: Reject negative data_len in ib_umad_write (bsc#1259797).
• CVE-2026-23272: netfilter: nf_tables: unconditionally bump set-nelems before insertion (bsc#1260009).
• CVE-2026-23274: netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels (bsc#1260005).
• CVE-2026-23317: drm/vmwgfx: Return the correct value in vmw_translate_ptr functions (bsc#1260562).

The following non security issues were fixed:

• nvme-fc: use ctrl state getter (git-fixes bsc#1215492).
• nvme-pci: fix queue unquiesce check on slot_reset (git-fixes).
• nvme-pci: skip nvme_write_sq_db on empty rqlist (git-fixes).
• PCI: dwc: ep: Return -ENOMEM for allocation failures (git-fixes).
• PCI: Fix lock symmetry in pci_slot_unlock() (git-fixes).
• PCI: Fix pci_slot_trylock() error handling (git-fixes).
• PCI: tegra194: Fix duplicate PLL disable in pex_ep_event_pex_rst_assert() (git-fixes).
• PCI/ACS: Fix 'pci=config_acs=' parameter (git-fixes).
• x86/platform/uv: Handle deconfigured sockets (bsc#1260347).

Special Instructions and Notes:

• Please reboot the system after installing this update.

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 Micro 5.5
  zypper in -t patch SUSE-SLE-Micro-5.5-2026-1606=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1606=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1606=1
• SUSE Linux Enterprise Server 15 SP5 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1606=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1606=1
• SUSE Linux Enterprise Live Patching 15-SP5
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-1606=1

Package List:

• SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64 nosrc)
  • kernel-default-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Micro 5.5 (aarch64 x86_64)
  • kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1
• SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
  • kernel-default-debugsource-5.14.21-150500.55.144.1
  • kernel-default-debuginfo-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Micro 5.5 (noarch)
  • kernel-macros-5.14.21-150500.55.144.1
  • kernel-source-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
  • dlm-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • cluster-md-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • dlm-kmp-default-5.14.21-150500.55.144.1
  • kernel-default-devel-debuginfo-5.14.21-150500.55.144.1
  • kernel-obs-build-debugsource-5.14.21-150500.55.144.1
  • ocfs2-kmp-default-5.14.21-150500.55.144.1
  • gfs2-kmp-default-5.14.21-150500.55.144.1
  • kernel-default-debugsource-5.14.21-150500.55.144.1
  • ocfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-syms-5.14.21-150500.55.144.1
  • kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1
  • cluster-md-kmp-default-5.14.21-150500.55.144.1
  • kernel-obs-build-5.14.21-150500.55.144.1
  • gfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-default-devel-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 nosrc)
  • kernel-64kb-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64)
  • kernel-64kb-debugsource-5.14.21-150500.55.144.1
  • kernel-64kb-devel-5.14.21-150500.55.144.1
  • kernel-64kb-debuginfo-5.14.21-150500.55.144.1
  • kernel-64kb-devel-debuginfo-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 nosrc x86_64)
  • kernel-default-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch)
  • kernel-macros-5.14.21-150500.55.144.1
  • kernel-devel-5.14.21-150500.55.144.1
  • kernel-source-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch nosrc)
  • kernel-docs-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
  • dlm-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • cluster-md-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • dlm-kmp-default-5.14.21-150500.55.144.1
  • kernel-default-devel-debuginfo-5.14.21-150500.55.144.1
  • kernel-obs-build-debugsource-5.14.21-150500.55.144.1
  • ocfs2-kmp-default-5.14.21-150500.55.144.1
  • gfs2-kmp-default-5.14.21-150500.55.144.1
  • kernel-default-debugsource-5.14.21-150500.55.144.1
  • ocfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-syms-5.14.21-150500.55.144.1
  • kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1
  • cluster-md-kmp-default-5.14.21-150500.55.144.1
  • kernel-obs-build-5.14.21-150500.55.144.1
  • gfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-default-devel-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 nosrc)
  • kernel-64kb-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64)
  • kernel-64kb-debugsource-5.14.21-150500.55.144.1
  • kernel-64kb-devel-5.14.21-150500.55.144.1
  • kernel-64kb-debuginfo-5.14.21-150500.55.144.1
  • kernel-64kb-devel-debuginfo-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 nosrc x86_64)
  • kernel-default-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch)
  • kernel-macros-5.14.21-150500.55.144.1
  • kernel-devel-5.14.21-150500.55.144.1
  • kernel-source-5.14.21-150500.55.144.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch nosrc)
  • kernel-docs-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • dlm-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • cluster-md-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • dlm-kmp-default-5.14.21-150500.55.144.1
  • kernel-default-devel-debuginfo-5.14.21-150500.55.144.1
  • kernel-obs-build-debugsource-5.14.21-150500.55.144.1
  • ocfs2-kmp-default-5.14.21-150500.55.144.1
  • gfs2-kmp-default-5.14.21-150500.55.144.1
  • kernel-default-debugsource-5.14.21-150500.55.144.1
  • ocfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-syms-5.14.21-150500.55.144.1
  • cluster-md-kmp-default-5.14.21-150500.55.144.1
  • reiserfs-kmp-default-5.14.21-150500.55.144.1
  • kernel-obs-build-5.14.21-150500.55.144.1
  • gfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • reiserfs-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-default-devel-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 nosrc)
  • kernel-64kb-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64)
  • kernel-64kb-debugsource-5.14.21-150500.55.144.1
  • kernel-64kb-devel-5.14.21-150500.55.144.1
  • kernel-64kb-debuginfo-5.14.21-150500.55.144.1
  • kernel-64kb-devel-debuginfo-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64 nosrc)
  • kernel-default-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le x86_64)
  • kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (noarch)
  • kernel-macros-5.14.21-150500.55.144.1
  • kernel-devel-5.14.21-150500.55.144.1
  • kernel-source-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (noarch nosrc)
  • kernel-docs-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (nosrc s390x)
  • kernel-zfcpdump-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (s390x)
  • kernel-zfcpdump-debuginfo-5.14.21-150500.55.144.1
  • kernel-zfcpdump-debugsource-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
  • dlm-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • cluster-md-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • dlm-kmp-default-5.14.21-150500.55.144.1
  • kernel-default-devel-debuginfo-5.14.21-150500.55.144.1
  • kernel-obs-build-debugsource-5.14.21-150500.55.144.1
  • ocfs2-kmp-default-5.14.21-150500.55.144.1
  • gfs2-kmp-default-5.14.21-150500.55.144.1
  • kernel-default-debugsource-5.14.21-150500.55.144.1
  • ocfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-syms-5.14.21-150500.55.144.1
  • kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1
  • cluster-md-kmp-default-5.14.21-150500.55.144.1
  • reiserfs-kmp-default-5.14.21-150500.55.144.1
  • kernel-obs-build-5.14.21-150500.55.144.1
  • gfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • reiserfs-kmp-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-default-debuginfo-5.14.21-150500.55.144.1
  • kernel-default-devel-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (nosrc ppc64le x86_64)
  • kernel-default-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch)
  • kernel-macros-5.14.21-150500.55.144.1
  • kernel-devel-5.14.21-150500.55.144.1
  • kernel-source-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch nosrc)
  • kernel-docs-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Live Patching 15-SP5 (nosrc)
  • kernel-default-5.14.21-150500.55.144.1
• SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
  • kernel-default-debugsource-5.14.21-150500.55.144.1
  • kernel-default-livepatch-devel-5.14.21-150500.55.144.1
  • kernel-livepatch-SLE15-SP5_Update_37-debugsource-1-150500.11.3.1
  • kernel-default-livepatch-5.14.21-150500.55.144.1
  • kernel-livepatch-5_14_21-150500_55_144-default-1-150500.11.3.1
  • kernel-livepatch-5_14_21-150500_55_144-default-debuginfo-1-150500.11.3.1
  • kernel-default-debuginfo-5.14.21-150500.55.144.1

References:

• https://www.suse.com/security/cve/CVE-2025-38234.html
• https://www.suse.com/security/cve/CVE-2025-68818.html
• https://www.suse.com/security/cve/CVE-2026-23103.html
• https://www.suse.com/security/cve/CVE-2026-23243.html
• https://www.suse.com/security/cve/CVE-2026-23272.html
• https://www.suse.com/security/cve/CVE-2026-23274.html
• https://www.suse.com/security/cve/CVE-2026-23317.html
• https://bugzilla.suse.com/show_bug.cgi?id=1215492
• https://bugzilla.suse.com/show_bug.cgi?id=1246057
• https://bugzilla.suse.com/show_bug.cgi?id=1256675
• https://bugzilla.suse.com/show_bug.cgi?id=1257773
• https://bugzilla.suse.com/show_bug.cgi?id=1259797
• https://bugzilla.suse.com/show_bug.cgi?id=1260005
• https://bugzilla.suse.com/show_bug.cgi?id=1260009
• https://bugzilla.suse.com/show_bug.cgi?id=1260347
• https://bugzilla.suse.com/show_bug.cgi?id=1260562