ESB-2026.5312

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.5312 Security update for the Linux Kernel 19 May 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-46300 CVE-2025-54518 CVE-2026-46333 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261908-1 Comment: CVSS (Max): 8.8 CVE-2026-46300 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) CVSS Source: Red Hat, [SUSE] Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H EPSS (Max): 0.0% (7th)* CVE-2026-46333 2026-05-17 * Not all EPSS found when published - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for the Linux Kernel Announcement ID: SUSE-SU-2026:1908-1 Release Date: 2026-05-17T17:14:47Z Rating: important o bsc#1264013 References: o bsc#1265209 o bsc#1265308 o CVE-2025-54518 Cross-References: o CVE-2026-46300 o CVE-2026-46333 o 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 o 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 o 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/ CVSS scores: MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X o 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 o 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 o 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 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 three vulnerabilities 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-2025-54518: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache (bsc#1264013). o CVE-2026-46300: net: skbuff: propagate shared-frag marker through pskb_copy () (bsc#1265209). o CVE-2026-46333: Fixed logic bug in the Linux kernel's __ptrace_may_access() function (bsc#1265308). The following non security issues were fixed: o io-wq: check that the predecessor is hashed in io_wq_remove_pending() (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-2026-1908=1 o SUSE Linux Enterprise High Availability Extension 15 SP6 zypper in -t patch SUSE-SLE-Product-HA-15-SP6-2026-1908=1 o SUSE Linux Enterprise Server 15 SP6 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-1908=1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-1908=1 o SUSE Linux Enterprise Live Patching 15-SP6 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-1908=1 Package List: o openSUSE Leap 15.6 (noarch nosrc) kernel-docs-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (noarch) kernel-docs-html-6.4.0-150600.23.109.1 kernel-devel-6.4.0-150600.23.109.1 kernel-source-vanilla-6.4.0-150600.23.109.1 kernel-source-6.4.0-150600.23.109.1 kernel-macros-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (nosrc ppc64le x86_64) kernel-debug-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64) kernel-default-devel-6.4.0-150600.23.109.1 kernel-obs-build-debugsource-6.4.0-150600.23.109.1 kselftests-kmp-default-6.4.0-150600.23.109.1 kernel-default-optional-6.4.0-150600.23.109.1 ocfs2-kmp-default-6.4.0-150600.23.109.1 kernel-default-extra-6.4.0-150600.23.109.1 kernel-default-optional-debuginfo-6.4.0-150600.23.109.1 kernel-syms-6.4.0-150600.23.109.1 cluster-md-kmp-default-6.4.0-150600.23.109.1 dlm-kmp-default-6.4.0-150600.23.109.1 kernel-default-debuginfo-6.4.0-150600.23.109.1 kernel-default-devel-debuginfo-6.4.0-150600.23.109.1 gfs2-kmp-default-debuginfo-6.4.0-150600.23.109.1 kernel-obs-build-6.4.0-150600.23.109.1 ocfs2-kmp-default-debuginfo-6.4.0-150600.23.109.1 cluster-md-kmp-default-debuginfo-6.4.0-150600.23.109.1 kernel-default-debugsource-6.4.0-150600.23.109.1 gfs2-kmp-default-6.4.0-150600.23.109.1 reiserfs-kmp-default-6.4.0-150600.23.109.1 kernel-default-extra-debuginfo-6.4.0-150600.23.109.1 kernel-obs-qa-6.4.0-150600.23.109.1 kselftests-kmp-default-debuginfo-6.4.0-150600.23.109.1 reiserfs-kmp-default-debuginfo-6.4.0-150600.23.109.1 kernel-default-livepatch-6.4.0-150600.23.109.1 dlm-kmp-default-debuginfo-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (aarch64 nosrc ppc64le x86_64) kernel-kvmsmall-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (aarch64 ppc64le x86_64) kernel-kvmsmall-devel-6.4.0-150600.23.109.1 kernel-kvmsmall-debugsource-6.4.0-150600.23.109.1 kernel-kvmsmall-devel-debuginfo-6.4.0-150600.23.109.1 kernel-kvmsmall-debuginfo-6.4.0-150600.23.109.1 kernel-default-base-rebuild-6.4.0-150600.23.109.1.150600.12.50.2 kernel-default-base-6.4.0-150600.23.109.1.150600.12.50.2 o openSUSE Leap 15.6 (ppc64le s390x x86_64) kernel-livepatch-SLE15-SP6_Update_25-debugsource-1-150600.13.5.1 kernel-livepatch-6_4_0-150600_23_109-default-1-150600.13.5.1 kernel-livepatch-6_4_0-150600_23_109-default-debuginfo-1-150600.13.5.1 kernel-default-livepatch-devel-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (nosrc) dtb-aarch64-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (aarch64) dtb-lg-6.4.0-150600.23.109.1 dtb-altera-6.4.0-150600.23.109.1 dtb-marvell-6.4.0-150600.23.109.1 dtb-arm-6.4.0-150600.23.109.1 dtb-rockchip-6.4.0-150600.23.109.1 kselftests-kmp-64kb-debuginfo-6.4.0-150600.23.109.1 dtb-amlogic-6.4.0-150600.23.109.1 kselftests-kmp-64kb-6.4.0-150600.23.109.1 kernel-64kb-optional-6.4.0-150600.23.109.1 kernel-64kb-extra-6.4.0-150600.23.109.1 kernel-64kb-optional-debuginfo-6.4.0-150600.23.109.1 dtb-freescale-6.4.0-150600.23.109.1 reiserfs-kmp-64kb-debuginfo-6.4.0-150600.23.109.1 ocfs2-kmp-64kb-debuginfo-6.4.0-150600.23.109.1 dlm-kmp-64kb-debuginfo-6.4.0-150600.23.109.1 cluster-md-kmp-64kb-debuginfo-6.4.0-150600.23.109.1 cluster-md-kmp-64kb-6.4.0-150600.23.109.1 dtb-exynos-6.4.0-150600.23.109.1 dtb-nvidia-6.4.0-150600.23.109.1 kernel-64kb-extra-debuginfo-6.4.0-150600.23.109.1 dtb-allwinner-6.4.0-150600.23.109.1 dtb-xilinx-6.4.0-150600.23.109.1 dtb-socionext-6.4.0-150600.23.109.1 dtb-apm-6.4.0-150600.23.109.1 kernel-64kb-devel-6.4.0-150600.23.109.1 kernel-64kb-devel-debuginfo-6.4.0-150600.23.109.1 dtb-mediatek-6.4.0-150600.23.109.1 dtb-cavium-6.4.0-150600.23.109.1 dtb-apple-6.4.0-150600.23.109.1 reiserfs-kmp-64kb-6.4.0-150600.23.109.1 dtb-renesas-6.4.0-150600.23.109.1 dtb-sprd-6.4.0-150600.23.109.1 gfs2-kmp-64kb-debuginfo-6.4.0-150600.23.109.1 kernel-64kb-debuginfo-6.4.0-150600.23.109.1 dtb-amd-6.4.0-150600.23.109.1 dtb-hisilicon-6.4.0-150600.23.109.1 ocfs2-kmp-64kb-6.4.0-150600.23.109.1 gfs2-kmp-64kb-6.4.0-150600.23.109.1 dtb-amazon-6.4.0-150600.23.109.1 dlm-kmp-64kb-6.4.0-150600.23.109.1 kernel-64kb-debugsource-6.4.0-150600.23.109.1 dtb-broadcom-6.4.0-150600.23.109.1 dtb-qcom-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (aarch64 nosrc) kernel-64kb-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 nosrc) kernel-default-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (x86_64) kernel-default-vdso-debuginfo-6.4.0-150600.23.109.1 kernel-kvmsmall-vdso-6.4.0-150600.23.109.1 kernel-kvmsmall-vdso-debuginfo-6.4.0-150600.23.109.1 kernel-debug-vdso-debuginfo-6.4.0-150600.23.109.1 kernel-debug-vdso-6.4.0-150600.23.109.1 kernel-default-vdso-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (nosrc s390x) kernel-zfcpdump-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (s390x) kernel-zfcpdump-debuginfo-6.4.0-150600.23.109.1 kernel-zfcpdump-debugsource-6.4.0-150600.23.109.1 o openSUSE Leap 15.6 (ppc64le x86_64) kernel-debug-devel-debuginfo-6.4.0-150600.23.109.1 kernel-debug-devel-6.4.0-150600.23.109.1 kernel-debug-debuginfo-6.4.0-150600.23.109.1 kernel-debug-debugsource-6.4.0-150600.23.109.1 o SUSE Linux Enterprise High Availability Extension 15 SP6 (nosrc) kernel-default-6.4.0-150600.23.109.1 o SUSE Linux Enterprise High Availability Extension 15 SP6 (aarch64 ppc64le s390x x86_64) kernel-default-debugsource-6.4.0-150600.23.109.1 kernel-default-debuginfo-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64) ocfs2-kmp-default-6.4.0-150600.23.109.1 cluster-md-kmp-default-debuginfo-6.4.0-150600.23.109.1 kernel-default-debugsource-6.4.0-150600.23.109.1 gfs2-kmp-default-6.4.0-150600.23.109.1 kernel-default-devel-6.4.0-150600.23.109.1 kernel-default-devel-debuginfo-6.4.0-150600.23.109.1 reiserfs-kmp-default-6.4.0-150600.23.109.1 gfs2-kmp-default-debuginfo-6.4.0-150600.23.109.1 kernel-obs-build-6.4.0-150600.23.109.1 ocfs2-kmp-default-debuginfo-6.4.0-150600.23.109.1 kernel-syms-6.4.0-150600.23.109.1 cluster-md-kmp-default-6.4.0-150600.23.109.1 kernel-obs-build-debugsource-6.4.0-150600.23.109.1 reiserfs-kmp-default-debuginfo-6.4.0-150600.23.109.1 dlm-kmp-default-6.4.0-150600.23.109.1 kernel-default-debuginfo-6.4.0-150600.23.109.1 dlm-kmp-default-debuginfo-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 nosrc) kernel-64kb-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64) kernel-64kb-devel-6.4.0-150600.23.109.1 kernel-64kb-debuginfo-6.4.0-150600.23.109.1 kernel-64kb-debugsource-6.4.0-150600.23.109.1 kernel-64kb-devel-debuginfo-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64 nosrc) kernel-default-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le x86_64) kernel-default-base-6.4.0-150600.23.109.1.150600.12.50.2 o SUSE Linux Enterprise Server 15 SP6 LTSS (noarch) kernel-macros-6.4.0-150600.23.109.1 kernel-source-6.4.0-150600.23.109.1 kernel-devel-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (noarch nosrc) kernel-docs-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (nosrc s390x) kernel-zfcpdump-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (s390x) kernel-zfcpdump-debuginfo-6.4.0-150600.23.109.1 kernel-zfcpdump-debugsource-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (nosrc ppc64le x86_64) kernel-default-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64) cluster-md-kmp-default-debuginfo-6.4.0-150600.23.109.1 kernel-default-debugsource-6.4.0-150600.23.109.1 kernel-default-devel-6.4.0-150600.23.109.1 kernel-default-devel-debuginfo-6.4.0-150600.23.109.1 reiserfs-kmp-default-6.4.0-150600.23.109.1 gfs2-kmp-default-6.4.0-150600.23.109.1 dlm-kmp-default-debuginfo-6.4.0-150600.23.109.1 gfs2-kmp-default-debuginfo-6.4.0-150600.23.109.1 kernel-obs-build-6.4.0-150600.23.109.1 ocfs2-kmp-default-debuginfo-6.4.0-150600.23.109.1 kernel-syms-6.4.0-150600.23.109.1 cluster-md-kmp-default-6.4.0-150600.23.109.1 kernel-obs-build-debugsource-6.4.0-150600.23.109.1 kernel-default-base-6.4.0-150600.23.109.1.150600.12.50.2 reiserfs-kmp-default-debuginfo-6.4.0-150600.23.109.1 dlm-kmp-default-6.4.0-150600.23.109.1 kernel-default-debuginfo-6.4.0-150600.23.109.1 ocfs2-kmp-default-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch) kernel-macros-6.4.0-150600.23.109.1 kernel-source-6.4.0-150600.23.109.1 kernel-devel-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch nosrc) kernel-docs-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Live Patching 15-SP6 (nosrc) kernel-default-6.4.0-150600.23.109.1 o SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64) kernel-livepatch-SLE15-SP6_Update_25-debugsource-1-150600.13.5.1 kernel-default-debugsource-6.4.0-150600.23.109.1 kernel-livepatch-6_4_0-150600_23_109-default-1-150600.13.5.1 kernel-default-debuginfo-6.4.0-150600.23.109.1 kernel-livepatch-6_4_0-150600_23_109-default-debuginfo-1-150600.13.5.1 kernel-default-livepatch-6.4.0-150600.23.109.1 kernel-default-livepatch-devel-6.4.0-150600.23.109.1 References: o https://www.suse.com/security/cve/CVE-2025-54518.html o https://www.suse.com/security/cve/CVE-2026-46300.html o https://www.suse.com/security/cve/CVE-2026-46333.html o https://bugzilla.suse.com/show_bug.cgi?id=1264013 o https://bugzilla.suse.com/show_bug.cgi?id=1265209 o https://bugzilla.suse.com/show_bug.cgi?id=1265308 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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