ESB-2026.4599

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4599 Security update for the Linux Kernel 5 May 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-23362 CVE-2026-23386 CVE-2024-26584 CVE-2026-22990 CVE-2026-23382 CVE-2026-23318 CVE-2026-23120 CVE-2026-23262 CVE-2026-23103 CVE-2026-23243 CVE-2026-23272 CVE-2026-23277 CVE-2025-38234 CVE-2025-39759 CVE-2026-23398 CVE-2025-71268 CVE-2025-71269 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261668-1 Comment: CVSS (Max): 7.8 CVE-2026-23243 (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% (18th) CVE-2026-23277 2026-05-03 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for the Linux Kernel Announcement ID: SUSE-SU-2026:1668-1 Release Date: 2026-05-01T08:37:57Z Rating: important o bsc#1220186 o bsc#1228031 o bsc#1246057 o bsc#1249522 o bsc#1257221 o bsc#1257773 o bsc#1258280 o bsc#1259770 o bsc#1259797 References: o bsc#1259865 o bsc#1259870 o bsc#1259889 o bsc#1259997 o bsc#1260009 o bsc#1260489 o bsc#1260536 o bsc#1260551 o bsc#1260730 o bsc#1260799 o CVE-2024-26584 o CVE-2025-38234 o CVE-2025-39759 o CVE-2025-71268 o CVE-2025-71269 o CVE-2026-22990 o CVE-2026-23103 o CVE-2026-23120 Cross-References: o CVE-2026-23243 o CVE-2026-23262 o CVE-2026-23272 o CVE-2026-23277 o CVE-2026-23318 o CVE-2026-23362 o CVE-2026-23382 o CVE-2026-23386 o CVE-2026-23398 o CVE-2024-26584 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2024-26584 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:H 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-2025-39759 ( SUSE ): 7.1 CVSS:4.0/AV:L/AC:L/AT:P/PR:H /UI:N/VC:H/VI:H/VA:H/SC:L/SI:N/SA:N o CVE-2025-39759 ( SUSE ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N /S:U/C:H/I:H/A:H o CVE-2025-39759 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2025-71268 ( 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-2025-71268 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:N/I:N/A:H o CVE-2025-71269 ( 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-2025-71269 ( SUSE ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:N/I:N/A:H o CVE-2026-22990 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L /UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N o CVE-2026-22990 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N /S:U/C:N/I:N/A:H o CVE-2026-22990 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-22990 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/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-2026-23120 ( 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-2026-23120 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:N/I:N/A:H o CVE-2026-23120 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:H CVSS scores: 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-2026-23262 ( SUSE ): 5.8 CVSS:4.0/AV:L/AC:H/AT:N/PR:L /UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N o CVE-2026-23262 ( SUSE ): 6.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:N/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-2026-23277 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N /UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N o CVE-2026-23277 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N /S:U/C:N/I:N/A:H o CVE-2026-23318 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:N/I:N/A:H o CVE-2026-23318 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:N/A:H o CVE-2026-23362 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:N/I:N/A:H o CVE-2026-23362 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-23382 ( 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-2026-23382 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:N/I:N/A:H o CVE-2026-23382 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-23386 ( 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-2026-23386 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:N/I:N/A:H o CVE-2026-23386 ( 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 SUSE Linux Enterprise High Performance Computing 12 SP5 o SUSE Linux Enterprise Live Patching 12-SP5 Affected o SUSE Linux Enterprise Server 12 SP5 Products: o SUSE Linux Enterprise Server 12 SP5 LTSS o SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security o SUSE Linux Enterprise Server for SAP Applications 12 SP5 An update that solves 17 vulnerabilities and has two security fixes can now be installed. Description: The SUSE Linux Enterprise 12 SP5 kernel was updated to fix various security issues The following security issues were fixed: o CVE-2024-26584: net/tls: return ENOTSUPP on tls_init() (bsc#1220186). o CVE-2025-38234: sched/rt: Fix race in push_rt_task (bsc#1246057). o CVE-2025-39759: btrfs: qgroup: fix race between quota disable and quota rescan ioctl (bsc#1249522). o CVE-2025-71268: btrfs: fix reservation leak in some error paths when inserting inline extent (bsc#1259865). o CVE-2025-71269: btrfs: do not free data reservation in fallback from inline due to -ENOSPC (bsc#1259889). o CVE-2026-22990: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() (bsc#1257221). o CVE-2026-23103: ipvlan: Make the addrs_lock be per port (bsc#1257773). o CVE-2026-23120: l2tp: avoid one data-race in l2tp_tunnel_del_work() (bsc# 1258280). o CVE-2026-23243: RDMA/umad: Reject negative data_len in ib_umad_write (bsc# 1259797). o CVE-2026-23262: gve: Fix stats report corruption on queue count change (bsc #1259870). o CVE-2026-23272: netfilter: nf_tables: unconditionally bump set-nelems before insertion (bsc#1260009). o CVE-2026-23277: net/sched: teql: fix NULL pointer dereference in iptunnel_xmit on TEQL slave xmit (bsc#1259997). o CVE-2026-23318: ALSA: usb-audio: Use correct version for UAC3 header validation (bsc#1260536). o CVE-2026-23362: can: bcm: fix locking for bcm_op runtime updates (bsc# 1260489). o CVE-2026-23382: HID: Add HID_CLAIMED_INPUT guards in raw_event callbacks missing them (bsc#1260551). o CVE-2026-23386: gve: fix incorrect buffer cleanup in gve_tx_clean_pending_packets for QPL (bsc#1260799). o CVE-2026-23398: icmp: fix NULL pointer dereference in icmp_tag_validation() (bsc#1260730). The following non security issues were fixed: o btrfs: fix processing of delayed data refs during backref walking (bsc# 1228031). o fs: skip superblock shrink on frozen xfs filesystems (bsc#1259770). 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 Server 12 SP5 LTSS zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-1668=1 o SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-1668= 1 o SUSE Linux Enterprise Live Patching 12-SP5 zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2026-1668=1 Package List: o SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64) gfs2-kmp-default-debuginfo-4.12.14-122.299.1 kernel-default-base-4.12.14-122.299.1 dlm-kmp-default-debuginfo-4.12.14-122.299.1 kernel-default-devel-4.12.14-122.299.1 ocfs2-kmp-default-debuginfo-4.12.14-122.299.1 kernel-default-base-debuginfo-4.12.14-122.299.1 kernel-default-debugsource-4.12.14-122.299.1 kernel-syms-4.12.14-122.299.1 cluster-md-kmp-default-debuginfo-4.12.14-122.299.1 cluster-md-kmp-default-4.12.14-122.299.1 ocfs2-kmp-default-4.12.14-122.299.1 gfs2-kmp-default-4.12.14-122.299.1 kernel-default-debuginfo-4.12.14-122.299.1 dlm-kmp-default-4.12.14-122.299.1 o SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64 nosrc) kernel-default-4.12.14-122.299.1 o SUSE Linux Enterprise Server 12 SP5 LTSS (noarch) kernel-source-4.12.14-122.299.1 kernel-macros-4.12.14-122.299.1 kernel-devel-4.12.14-122.299.1 o SUSE Linux Enterprise Server 12 SP5 LTSS (s390x) kernel-default-man-4.12.14-122.299.1 o SUSE Linux Enterprise Server 12 SP5 LTSS (x86_64) kernel-default-devel-debuginfo-4.12.14-122.299.1 o SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64) gfs2-kmp-default-debuginfo-4.12.14-122.299.1 kernel-default-base-4.12.14-122.299.1 dlm-kmp-default-debuginfo-4.12.14-122.299.1 kernel-default-devel-4.12.14-122.299.1 kernel-default-devel-debuginfo-4.12.14-122.299.1 ocfs2-kmp-default-debuginfo-4.12.14-122.299.1 kernel-default-base-debuginfo-4.12.14-122.299.1 kernel-default-debugsource-4.12.14-122.299.1 kernel-syms-4.12.14-122.299.1 cluster-md-kmp-default-debuginfo-4.12.14-122.299.1 cluster-md-kmp-default-4.12.14-122.299.1 ocfs2-kmp-default-4.12.14-122.299.1 gfs2-kmp-default-4.12.14-122.299.1 kernel-default-debuginfo-4.12.14-122.299.1 dlm-kmp-default-4.12.14-122.299.1 o SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (nosrc x86_64) kernel-default-4.12.14-122.299.1 o SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (noarch) kernel-source-4.12.14-122.299.1 kernel-macros-4.12.14-122.299.1 kernel-devel-4.12.14-122.299.1 o SUSE Linux Enterprise Live Patching 12-SP5 (nosrc) kernel-default-4.12.14-122.299.1 o SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64) kernel-default-kgraft-devel-4.12.14-122.299.1 kgraft-patch-4_12_14-122_299-default-1-8.3.1 kernel-default-debugsource-4.12.14-122.299.1 kernel-default-kgraft-4.12.14-122.299.1 kernel-default-debuginfo-4.12.14-122.299.1 References: o https://www.suse.com/security/cve/CVE-2024-26584.html o https://www.suse.com/security/cve/CVE-2025-38234.html o https://www.suse.com/security/cve/CVE-2025-39759.html o https://www.suse.com/security/cve/CVE-2025-71268.html o https://www.suse.com/security/cve/CVE-2025-71269.html o https://www.suse.com/security/cve/CVE-2026-22990.html o https://www.suse.com/security/cve/CVE-2026-23103.html o https://www.suse.com/security/cve/CVE-2026-23120.html o https://www.suse.com/security/cve/CVE-2026-23243.html o https://www.suse.com/security/cve/CVE-2026-23262.html o https://www.suse.com/security/cve/CVE-2026-23272.html o https://www.suse.com/security/cve/CVE-2026-23277.html o https://www.suse.com/security/cve/CVE-2026-23318.html o https://www.suse.com/security/cve/CVE-2026-23362.html o https://www.suse.com/security/cve/CVE-2026-23382.html o https://www.suse.com/security/cve/CVE-2026-23386.html o https://www.suse.com/security/cve/CVE-2026-23398.html o https://bugzilla.suse.com/show_bug.cgi?id=1220186 o https://bugzilla.suse.com/show_bug.cgi?id=1228031 o https://bugzilla.suse.com/show_bug.cgi?id=1246057 o https://bugzilla.suse.com/show_bug.cgi?id=1249522 o https://bugzilla.suse.com/show_bug.cgi?id=1257221 o https://bugzilla.suse.com/show_bug.cgi?id=1257773 o https://bugzilla.suse.com/show_bug.cgi?id=1258280 o https://bugzilla.suse.com/show_bug.cgi?id=1259770 o https://bugzilla.suse.com/show_bug.cgi?id=1259797 o https://bugzilla.suse.com/show_bug.cgi?id=1259865 o https://bugzilla.suse.com/show_bug.cgi?id=1259870 o https://bugzilla.suse.com/show_bug.cgi?id=1259889 o https://bugzilla.suse.com/show_bug.cgi?id=1259997 o https://bugzilla.suse.com/show_bug.cgi?id=1260009 o https://bugzilla.suse.com/show_bug.cgi?id=1260489 o https://bugzilla.suse.com/show_bug.cgi?id=1260536 o https://bugzilla.suse.com/show_bug.cgi?id=1260551 o https://bugzilla.suse.com/show_bug.cgi?id=1260730 o https://bugzilla.suse.com/show_bug.cgi?id=1260799 - --------------------------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 ===========================================================================