ESB-2026.4460 — Vulnetix

ESB-2026.4460 PUBLISHED CVSS 8.199999809265137 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4460 Security update for the Linux Kernel 30 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-23412 CVE-2026-23381 CVE-2026-23413 CVE-2025-39998 CVE-2026-23274 CVE-2026-23231 CVE-2026-23103 CVE-2026-23272 CVE-2026-23243 CVE-2026-23278 CVE-2026-23293 CVE-2026-23398 CVE-2026-31788 CVE-2026-23317 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261643-1 Comment: CVSS (Max): 8.2 CVE-2026-31788 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H) CVSS Source: SUSE, [kernel.org] Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H EPSS (Max): 0.2% (43rd) CVE-2025-39998 2026-04-28 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for the Linux Kernel Announcement ID: SUSE-SU-2026:1643-1 Release Date: 2026-04-28T13:27:24Z Rating: important o bsc#1252073 o bsc#1253122 o bsc#1257506 o bsc#1257773 o bsc#1259188 o bsc#1259461 o bsc#1259580 o bsc#1259707 o bsc#1259797 References: o bsc#1259998 o bsc#1260005 o bsc#1260009 o bsc#1260347 o bsc#1260471 o bsc#1260486 o bsc#1260562 o bsc#1260730 o bsc#1261412 o bsc#1261498 o CVE-2025-39998 o CVE-2026-23103 o CVE-2026-23231 o CVE-2026-23243 o CVE-2026-23272 o CVE-2026-23274 o CVE-2026-23278 Cross-References: o CVE-2026-23293 o CVE-2026-23317 o CVE-2026-23381 o CVE-2026-23398 o CVE-2026-23412 o CVE-2026-23413 o CVE-2026-31788 o CVE-2025-39998 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L /UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N o CVE-2025-39998 ( SUSE ): 6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:N/I:L/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-2026-23231 ( 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-2026-23231 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2026-23231 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-23231 ( 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 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-2026-23278 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:P/PR:L /UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N o CVE-2026-23278 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:H/I:H/A:H CVSS scores: o CVE-2026-23278 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-23293 ( SUSE ): 5.9 CVSS:4.0/AV:L/AC:H/AT:P/PR:N /UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N o CVE-2026-23293 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N /S:U/C:N/I:N/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 CVE-2026-23381 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:N/I:N/A:H o CVE-2026-23381 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-23398 ( SUSE ): 5.9 CVSS:4.0/AV:L/AC:H/AT:N/PR:N /UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N o CVE-2026-23398 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N /S:U/C:N/I:N/A:H o CVE-2026-23398 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-23412 ( 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-2026-23412 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2026-23412 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-23412 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-23413 ( SUSE ): 7.1 CVSS:4.0/AV:L/AC:H/AT:N/PR:H /UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N o CVE-2026-23413 ( SUSE ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N /S:U/C:H/I:H/A:H o CVE-2026-23413 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-23413 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-31788 ( NVD ): 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/ S:C/C:H/I:H/A:H o CVE-2026-31788 ( NVD ): 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/ S:C/C:H/I:H/A:H o openSUSE Leap 15.6 o SUSE Linux Enterprise High Availability Extension 15 SP6 Affected o SUSE Linux Enterprise Live Patching 15-SP6 Products: o SUSE Linux Enterprise Real Time 15 SP6 o SUSE Linux Enterprise Server 15 SP6 o SUSE Linux Enterprise Server 15 SP6 LTSS o SUSE Linux Enterprise Server for SAP Applications 15 SP6 An update that solves 14 vulnerabilities and has five security fixes can now be installed. Description: The SUSE Linux Enterprise 15 SP6 kernel was updated to fix various security issues The following security issues were fixed: o CVE-2025-39998: scsi: target: target_core_configfs: Add length check to avoid buffer overflow (bsc#1252073). o CVE-2026-23103: ipvlan: Make the addrs_lock be per port (bsc#1257773). o CVE-2026-23231: netfilter: nf_tables: fix use-after-free in nf_tables_addchain() (bsc#1259188). 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-2026-23278: netfilter: nf_tables: always walk all pending catchall elements (bsc#1259998). o CVE-2026-23293: net: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled (bsc#1260486). o CVE-2026-23317: drm/vmwgfx: Return the correct value in vmw_translate_ptr functions (bsc#1260562). o CVE-2026-23381: net: bridge: fix nd_tbl NULL dereference when IPv6 is disabled (bsc#1260471). o CVE-2026-23398: icmp: fix NULL pointer dereference in icmp_tag_validation() (bsc#1260730). o CVE-2026-23412: netfilter: bpf: defer hook memory release until rcu readers are done (bsc#1261412). o CVE-2026-23413: clsact: Fix use-after-free in init/destroy rollback asymmetry (bsc#1261498). o CVE-2026-31788: xen/privcmd: restrict usage in unprivileged domU (bsc# 1259707). The following non security issues were fixed: o KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE (bsc#1259461). o KVM: x86/mmu: Retry fault before acquiring mmu_lock if mapping is changing (bsc#1253122). o net: mana: fix use-after-free in add_adev() error path (git-fixes). o net: mana: Trigger VF reset/recovery on health check failure due to HWC timeout (bsc#1259580). o x86/platform/uv: Handle deconfigured sockets (bsc#1260347). o xen/privcmd: unregister xenstore notifier on module exit (git-fixes). 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 openSUSE Leap 15.6 zypper in -t patch SUSE-2026-1643=1 o SUSE Linux Enterprise High Availability Extension 15 SP6 zypper in -t patch SUSE-SLE-Product-HA-15-SP6-2026-1643=1 o SUSE Linux Enterprise Server 15 SP6 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-1643=1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-1643=1 o SUSE Linux Enterprise Live Patching 15-SP6 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-1643=1 Package List: o openSUSE Leap 15.6 (noarch nosrc) kernel-docs-6.4.0-150600.23.95.1 o openSUSE Leap 15.6 (noarch) kernel-docs-html-6.4.0-150600.23.95.1 kernel-source-6.4.0-150600.23.95.1 kernel-macros-6.4.0-150600.23.95.1 kernel-source-vanilla-6.4.0-150600.23.95.1 kernel-devel-6.4.0-150600.23.95.1 o openSUSE Leap 15.6 (nosrc ppc64le x86_64) kernel-debug-6.4.0-150600.23.95.1 o openSUSE Leap 15.6 (ppc64le x86_64) 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dtb-qcom-6.4.0-150600.23.95.1 dtb-amazon-6.4.0-150600.23.95.1 dtb-lg-6.4.0-150600.23.95.1 gfs2-kmp-64kb-6.4.0-150600.23.95.1 kernel-64kb-extra-6.4.0-150600.23.95.1 dlm-kmp-64kb-debuginfo-6.4.0-150600.23.95.1 reiserfs-kmp-64kb-6.4.0-150600.23.95.1 ocfs2-kmp-64kb-debuginfo-6.4.0-150600.23.95.1 dtb-marvell-6.4.0-150600.23.95.1 dtb-amlogic-6.4.0-150600.23.95.1 cluster-md-kmp-64kb-6.4.0-150600.23.95.1 dtb-xilinx-6.4.0-150600.23.95.1 o openSUSE Leap 15.6 (aarch64 nosrc) kernel-64kb-6.4.0-150600.23.95.1 o SUSE Linux Enterprise High Availability Extension 15 SP6 (nosrc) kernel-default-6.4.0-150600.23.95.1 o SUSE Linux Enterprise High Availability Extension 15 SP6 (aarch64 ppc64le s390x x86_64) kernel-default-debugsource-6.4.0-150600.23.95.1 kernel-default-debuginfo-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64) dlm-kmp-default-debuginfo-6.4.0-150600.23.95.1 kernel-obs-build-6.4.0-150600.23.95.1 ocfs2-kmp-default-debuginfo-6.4.0-150600.23.95.1 cluster-md-kmp-default-debuginfo-6.4.0-150600.23.95.1 ocfs2-kmp-default-6.4.0-150600.23.95.1 dlm-kmp-default-6.4.0-150600.23.95.1 gfs2-kmp-default-debuginfo-6.4.0-150600.23.95.1 gfs2-kmp-default-6.4.0-150600.23.95.1 kernel-default-debugsource-6.4.0-150600.23.95.1 kernel-default-devel-6.4.0-150600.23.95.1 kernel-default-devel-debuginfo-6.4.0-150600.23.95.1 reiserfs-kmp-default-6.4.0-150600.23.95.1 reiserfs-kmp-default-debuginfo-6.4.0-150600.23.95.1 kernel-obs-build-debugsource-6.4.0-150600.23.95.1 kernel-default-debuginfo-6.4.0-150600.23.95.1 cluster-md-kmp-default-6.4.0-150600.23.95.1 kernel-syms-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 nosrc) kernel-64kb-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64) kernel-64kb-debuginfo-6.4.0-150600.23.95.1 kernel-64kb-debugsource-6.4.0-150600.23.95.1 kernel-64kb-devel-6.4.0-150600.23.95.1 kernel-64kb-devel-debuginfo-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64 nosrc) kernel-default-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le x86_64) kernel-default-base-6.4.0-150600.23.95.1.150600.12.44.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (noarch) kernel-macros-6.4.0-150600.23.95.1 kernel-source-6.4.0-150600.23.95.1 kernel-devel-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (noarch nosrc) kernel-docs-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (nosrc s390x) kernel-zfcpdump-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (s390x) kernel-zfcpdump-debugsource-6.4.0-150600.23.95.1 kernel-zfcpdump-debuginfo-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64) dlm-kmp-default-debuginfo-6.4.0-150600.23.95.1 kernel-default-base-6.4.0-150600.23.95.1.150600.12.44.1 kernel-obs-build-6.4.0-150600.23.95.1 ocfs2-kmp-default-debuginfo-6.4.0-150600.23.95.1 cluster-md-kmp-default-debuginfo-6.4.0-150600.23.95.1 ocfs2-kmp-default-6.4.0-150600.23.95.1 dlm-kmp-default-6.4.0-150600.23.95.1 gfs2-kmp-default-debuginfo-6.4.0-150600.23.95.1 gfs2-kmp-default-6.4.0-150600.23.95.1 kernel-default-debugsource-6.4.0-150600.23.95.1 kernel-default-devel-6.4.0-150600.23.95.1 kernel-default-devel-debuginfo-6.4.0-150600.23.95.1 reiserfs-kmp-default-6.4.0-150600.23.95.1 reiserfs-kmp-default-debuginfo-6.4.0-150600.23.95.1 kernel-obs-build-debugsource-6.4.0-150600.23.95.1 kernel-default-debuginfo-6.4.0-150600.23.95.1 cluster-md-kmp-default-6.4.0-150600.23.95.1 kernel-syms-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (nosrc ppc64le x86_64) kernel-default-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch) kernel-macros-6.4.0-150600.23.95.1 kernel-source-6.4.0-150600.23.95.1 kernel-devel-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch nosrc) kernel-docs-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Live Patching 15-SP6 (nosrc) kernel-default-6.4.0-150600.23.95.1 o SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64) kernel-livepatch-SLE15-SP6_Update_22-debugsource-1-150600.13.3.1 kernel-livepatch-6_4_0-150600_23_95-default-debuginfo-1-150600.13.3.1 kernel-default-livepatch-6.4.0-150600.23.95.1 kernel-default-livepatch-devel-6.4.0-150600.23.95.1 kernel-livepatch-6_4_0-150600_23_95-default-1-150600.13.3.1 kernel-default-debugsource-6.4.0-150600.23.95.1 kernel-default-debuginfo-6.4.0-150600.23.95.1 References: o https://www.suse.com/security/cve/CVE-2025-39998.html o https://www.suse.com/security/cve/CVE-2026-23103.html o https://www.suse.com/security/cve/CVE-2026-23231.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-2026-23278.html o https://www.suse.com/security/cve/CVE-2026-23293.html o https://www.suse.com/security/cve/CVE-2026-23317.html o https://www.suse.com/security/cve/CVE-2026-23381.html o https://www.suse.com/security/cve/CVE-2026-23398.html o https://www.suse.com/security/cve/CVE-2026-23412.html o https://www.suse.com/security/cve/CVE-2026-23413.html o https://www.suse.com/security/cve/CVE-2026-31788.html o https://bugzilla.suse.com/show_bug.cgi?id=1252073 o https://bugzilla.suse.com/show_bug.cgi?id=1253122 o https://bugzilla.suse.com/show_bug.cgi?id=1257506 o https://bugzilla.suse.com/show_bug.cgi?id=1257773 o https://bugzilla.suse.com/show_bug.cgi?id=1259188 o https://bugzilla.suse.com/show_bug.cgi?id=1259461 o https://bugzilla.suse.com/show_bug.cgi?id=1259580 o https://bugzilla.suse.com/show_bug.cgi?id=1259707 o https://bugzilla.suse.com/show_bug.cgi?id=1259797 o https://bugzilla.suse.com/show_bug.cgi?id=1259998 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=1260471 o https://bugzilla.suse.com/show_bug.cgi?id=1260486 o https://bugzilla.suse.com/show_bug.cgi?id=1260562 o https://bugzilla.suse.com/show_bug.cgi?id=1260730 o https://bugzilla.suse.com/show_bug.cgi?id=1261412 o https://bugzilla.suse.com/show_bug.cgi?id=1261498 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================

Risk Scores

CVSS v3.1

8.199999809265137

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions
SUSE	Linux Kernel

Timeline

Apr 30, 2026 CVE Published

References

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