ESB-2026.3301 — Vulnetix

ESB-2026.3301 PUBLISHED CVSS 7.800000190734863 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3301 Security update for the Linux Kernel RT (Live Patch 6 for SUSE Linux Enterprise 15 SP7) 7 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel RT (Live Patch 6 for SUSE Linux Enterprise 15 SP7) Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2025-40159 CVE-2025-71120 CVE-2026-23111 CVE-2026-22999 CVE-2026-23209 CVE-2026-23074 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261180-1 Comment: CVSS (Max): 7.8 CVE-2026-23209 (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): 0.0% (9th) CVE-2025-40159 2026-04-05 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for the Linux Kernel RT (Live Patch 6 for SUSE Linux Enterprise 15 SP7) Announcement ID: SUSE-SU-2026:1180-1 Release Date: 2026-04-03T16:41:43Z Rating: important o bsc#1253404 o bsc#1256780 o bsc#1257238 References: o bsc#1258051 o bsc#1258183 o bsc#1258784 o CVE-2025-40159 o CVE-2025-71120 o CVE-2026-22999 Cross-References: o CVE-2026-23074 o CVE-2026-23111 o CVE-2026-23209 o CVE-2025-40159 ( 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-2025-40159 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2025-71120 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N /UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N o CVE-2025-71120 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N /S:U/C:N/I:N/A:H o CVE-2025-71120 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-22999 ( 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-2026-22999 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2026-22999 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-23074 ( 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-2026-23074 ( 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-2026-23074 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-23074 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-23111 ( SUSE ): 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:L /UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N o CVE-2026-23111 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2026-23111 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-23111 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-23209 ( SUSE ): 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:L /UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N o CVE-2026-23209 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2026-23209 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2026-23209 ( 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 Live Patching 15-SP7 Affected o SUSE Linux Enterprise Real Time 15 SP7 Products: o SUSE Linux Enterprise Server 15 SP7 o SUSE Linux Enterprise Server for SAP Applications 15 SP7 An update that solves six vulnerabilities can now be installed. Description: This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.22 fixes various security issues The following security issues were fixed: o CVE-2025-40159: xsk: Harden userspace-supplied xdp_desc validation (bsc# 1253404). o CVE-2025-71120: SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf (bsc#1256780). o CVE-2026-22999: net/sched: sch_qfq: do not free existing class in qfq_change_class() (bsc#1257238). o CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc (bsc#1258051). o CVE-2026-23111: netfilter: nf_tables: fix inverted genmask check in nft_map_catchall_activate() (bsc#1258183). o CVE-2026-23209: macvlan: fix error recovery in macvlan_common_newlink() (bsc#1258784). 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 Live Patching 15-SP7 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP7-2026-1180=1 Package List: o SUSE Linux Enterprise Live Patching 15-SP7 (x86_64) kernel-livepatch-6_4_0-150700_7_22-rt-debuginfo-4-150700.2.1 kernel-livepatch-6_4_0-150700_7_22-rt-4-150700.2.1 kernel-livepatch-SLE15-SP7-RT_Update_6-debugsource-4-150700.2.1 References: o https://www.suse.com/security/cve/CVE-2025-40159.html o https://www.suse.com/security/cve/CVE-2025-71120.html o https://www.suse.com/security/cve/CVE-2026-22999.html o https://www.suse.com/security/cve/CVE-2026-23074.html o https://www.suse.com/security/cve/CVE-2026-23111.html o https://www.suse.com/security/cve/CVE-2026-23209.html o https://bugzilla.suse.com/show_bug.cgi?id=1253404 o https://bugzilla.suse.com/show_bug.cgi?id=1256780 o https://bugzilla.suse.com/show_bug.cgi?id=1257238 o https://bugzilla.suse.com/show_bug.cgi?id=1258051 o https://bugzilla.suse.com/show_bug.cgi?id=1258183 o https://bugzilla.suse.com/show_bug.cgi?id=1258784 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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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

7.800000190734863

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

Affected Products

Vendor	Product	Versions
SUSE	Linux Kernel RT (Live Patch 6 for SUSE Linux Enterprise 15 SP7)

Timeline

Apr 7, 2026 CVE Published

References

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