ESB-2026.4209

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4209 Security update for the Linux Kernel 27 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2025-68818 CVE-2026-23103 CVE-2026-23243 CVE-2026-23272 CVE-2026-23274 CVE-2025-38234 CVE-2026-23317 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261606-1 Comment: CVSS (Max): 7.8 CVE-2026-23317 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) CVSS Source: SUSE Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H EPSS (Max): 0.1% (16th) CVE-2025-68818 2026-04-26 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for the Linux Kernel Announcement ID: SUSE-SU-2026:1606-1 Release Date: 2026-04-24T11:50:26Z Rating: important o bsc#1215492 o bsc#1246057 o bsc#1256675 o bsc#1257773 References: o bsc#1259797 o bsc#1260005 o bsc#1260009 o bsc#1260347 o bsc#1260562 o CVE-2025-38234 o CVE-2025-68818 o CVE-2026-23103 Cross-References: o CVE-2026-23243 o CVE-2026-23272 o CVE-2026-23274 o CVE-2026-23317 o 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 o 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 o 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 o 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 o 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 o 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 o 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 o 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 o 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 o 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 CVSS scores: o 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 o 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 o 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 o 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 o 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 o 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 o 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 o 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 o 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 o 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 o SUSE Linux Enterprise High Performance Computing 15 SP5 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 o SUSE Linux Enterprise High Performance Computing LTSS 15 Affected SP5 Products: o SUSE Linux Enterprise Live Patching 15-SP5 o SUSE Linux Enterprise Micro 5.5 o SUSE Linux Enterprise Real Time 15 SP5 o SUSE Linux Enterprise Server 15 SP5 o SUSE Linux Enterprise Server 15 SP5 LTSS o 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: o CVE-2025-38234: sched/rt: Fix race in push_rt_task (bsc#1246057). o CVE-2026-23103: ipvlan: Make the addrs_lock be per port (bsc#1257773). o CVE-2026-23243: RDMA/umad: Reject negative data_len in ib_umad_write (bsc# 1259797). o CVE-2026-23272: netfilter: nf_tables: unconditionally bump set-nelems before insertion (bsc#1260009). o CVE-2026-23274: netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels (bsc#1260005). o CVE-2026-23317: drm/vmwgfx: Return the correct value in vmw_translate_ptr functions (bsc#1260562). The following non security issues were fixed: o nvme-fc: use ctrl state getter (git-fixes bsc#1215492). o nvme-pci: fix queue unquiesce check on slot_reset (git-fixes). o nvme-pci: skip nvme_write_sq_db on empty rqlist (git-fixes). o PCI: dwc: ep: Return -ENOMEM for allocation failures (git-fixes). o PCI: Fix lock symmetry in pci_slot_unlock() (git-fixes). o PCI: Fix pci_slot_trylock() error handling (git-fixes). o PCI: tegra194: Fix duplicate PLL disable in pex_ep_event_pex_rst_assert() (git-fixes). o PCI/ACS: Fix 'pci=config_acs=' parameter (git-fixes). o x86/platform/uv: Handle deconfigured sockets (bsc#1260347). Special Instructions and Notes: o 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: o SUSE Linux Enterprise Micro 5.5 zypper in -t patch SUSE-SLE-Micro-5.5-2026-1606=1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1606=1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1606=1 o SUSE Linux Enterprise Server 15 SP5 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1606=1 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1606=1 o SUSE Linux Enterprise Live Patching 15-SP5 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-1606=1 Package List: o SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64 nosrc) kernel-default-5.14.21-150500.55.144.1 o SUSE Linux Enterprise Micro 5.5 (aarch64 x86_64) kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1 o 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 o 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 o 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 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 nosrc) kernel-64kb-5.14.21-150500.55.144.1 o 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 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 nosrc x86_64) kernel-default-5.14.21-150500.55.144.1 o 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 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch nosrc) kernel-docs-5.14.21-150500.55.144.1 o 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 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 nosrc) kernel-64kb-5.14.21-150500.55.144.1 o 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 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 nosrc x86_64) kernel-default-5.14.21-150500.55.144.1 o 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 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch nosrc) kernel-docs-5.14.21-150500.55.144.1 o 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 o SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 nosrc) kernel-64kb-5.14.21-150500.55.144.1 o 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 o SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64 nosrc) kernel-default-5.14.21-150500.55.144.1 o 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 o 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 o SUSE Linux Enterprise Server 15 SP5 LTSS (noarch nosrc) kernel-docs-5.14.21-150500.55.144.1 o SUSE Linux Enterprise Server 15 SP5 LTSS (nosrc s390x) kernel-zfcpdump-5.14.21-150500.55.144.1 o 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 o 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 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 (nosrc ppc64le x86_64) kernel-default-5.14.21-150500.55.144.1 o 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 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch nosrc) kernel-docs-5.14.21-150500.55.144.1 o SUSE Linux Enterprise Live Patching 15-SP5 (nosrc) kernel-default-5.14.21-150500.55.144.1 o 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: o https://www.suse.com/security/cve/CVE-2025-38234.html o https://www.suse.com/security/cve/CVE-2025-68818.html o https://www.suse.com/security/cve/CVE-2026-23103.html o https://www.suse.com/security/cve/CVE-2026-23243.html o https://www.suse.com/security/cve/CVE-2026-23272.html o https://www.suse.com/security/cve/CVE-2026-23274.html o https://www.suse.com/security/cve/CVE-2026-23317.html o https://bugzilla.suse.com/show_bug.cgi?id=1215492 o https://bugzilla.suse.com/show_bug.cgi?id=1246057 o https://bugzilla.suse.com/show_bug.cgi?id=1256675 o https://bugzilla.suse.com/show_bug.cgi?id=1257773 o https://bugzilla.suse.com/show_bug.cgi?id=1259797 o https://bugzilla.suse.com/show_bug.cgi?id=1260005 o https://bugzilla.suse.com/show_bug.cgi?id=1260009 o https://bugzilla.suse.com/show_bug.cgi?id=1260347 o https://bugzilla.suse.com/show_bug.cgi?id=1260562 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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