ESB-2026.3593 — Vulnetix

ESB-2026.3593 PUBLISHED CVSS 7.800000190734863 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3593 Security update for the Linux Kernel RT (Live Patch 5 for SUSE Linux Enterprise Micro 6.0) 14 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel RT (Live Patch 5 for SUSE Linux Enterprise Micro 6.0) Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2025-40159 CVE-2025-71120 CVE-2025-39973 CVE-2026-23111 CVE-2026-22999 CVE-2025-40018 CVE-2026-23209 CVE-2026-23074 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-202621061-1 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): 0.1% (18th) CVE-2025-40018 2026-04-13 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for the Linux Kernel RT (Live Patch 5 for SUSE Linux Enterprise Micro 6.0) Announcement ID: SUSE-SU-2026:21061-1 Release Date: 2026-04-09T13:21:21Z Rating: important o bsc#1252036 o bsc#1252689 o bsc#1253404 o bsc#1256780 References: o bsc#1257238 o bsc#1258051 o bsc#1258183 o bsc#1258784 o CVE-2025-39973 o CVE-2025-40018 o CVE-2025-40159 o CVE-2025-71120 Cross-References: o CVE-2026-22999 o CVE-2026-23074 o CVE-2026-23111 o CVE-2026-23209 o CVE-2025-39973 ( 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-2025-39973 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2025-40018 ( 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-2025-40018 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2025-40159 ( 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 CVSS scores: 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 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 Affected o SUSE Linux Micro 6.1 Products: An update that solves eight vulnerabilities can now be installed. Description: This update for the SUSE Linux Enterprise Kernel 6.4.0-25.1 fixes various security issues The following security issues were fixed: o CVE-2025-39973: i40e: add validation for ring_len param (bsc#1252036). o CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc# 1252689). 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 Micro 6.1 zypper in -t patch SUSE-SLE-Micro-6.1-kernel-339=1 Package List: o SUSE Linux Micro 6.1 (x86_64) kernel-livepatch-6_4_0-25-rt-debuginfo-17-1.1 kernel-livepatch-MICRO-6-0-RT_Update_5-debugsource-17-1.1 kernel-livepatch-6_4_0-25-rt-17-1.1 References: o https://www.suse.com/security/cve/CVE-2025-39973.html o https://www.suse.com/security/cve/CVE-2025-40018.html 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=1252036 o https://bugzilla.suse.com/show_bug.cgi?id=1252689 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. 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

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 5 for SUSE Linux Enterprise Micro 6.0)

Timeline

Apr 14, 2026 CVE Published

References

Open in Interactive Console →