ESB-2026.4048 — Vulnetix

ESB-2026.4048 PUBLISHED CVSS 7 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4048 Security update for the Linux Kernel (Live Patch 1 for SUSE Linux Enterprise 15 SP7) 22 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel (Live Patch 1 for SUSE Linux Enterprise 15 SP7) Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2025-40309 CVE-2026-23268 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261532-1 Comment: CVSS (Max): 7.0 CVE-2026-23268 (CVSS:3.1/AV:L/AC:H/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:H/PR:L/UI:N/S:U/C:H/I:H/A:H EPSS (Max): 0.0% (13th) CVE-2025-40309 2026-04-21 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for the Linux Kernel (Live Patch 1 for SUSE Linux Enterprise 15 SP7) Announcement ID: SUSE-SU-2026:1532-1 Release Date: 2026-04-21T12:04:58Z Rating: important o bsc#1255066 References: o bsc#1259859 o CVE-2025-40309 Cross-References: o CVE-2026-23268 o CVE-2025-40309 ( 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-2025-40309 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2026-23268 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:N/PR:L CVSS scores: /UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N o CVE-2026-23268 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N /S:U/C:H/I:H/A:H o CVE-2026-23268 ( 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 two vulnerabilities can now be installed. Description: This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.53.3 fixes various security issues The following security issues were fixed: o CVE-2025-40309: Bluetooth: SCO: Fix UAF on sco_conn_free (bsc#1255066). o CVE-2026-23268: apparmor: fix unprivileged local user can do privileged policy management (bsc#1259859). 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-SP7-2026-1532=1 Package List: o SUSE Linux Enterprise Live Patching 15-SP7 (ppc64le s390x) kernel-livepatch-6_4_0-150700_53_3-default-debuginfo-14-150700.2.2 kernel-livepatch-SLE15-SP7_Update_1-debugsource-14-150700.2.2 kernel-livepatch-6_4_0-150700_53_3-default-14-150700.2.2 o SUSE Linux Enterprise Live Patching 15-SP7 (x86_64) kernel-livepatch-SLE15-SP7_Update_1-debugsource-14-150700.2.1 kernel-livepatch-6_4_0-150700_53_3-default-debuginfo-14-150700.2.1 kernel-livepatch-6_4_0-150700_53_3-default-14-150700.2.1 References: o https://www.suse.com/security/cve/CVE-2025-40309.html o https://www.suse.com/security/cve/CVE-2026-23268.html o https://bugzilla.suse.com/show_bug.cgi?id=1255066 o https://bugzilla.suse.com/show_bug.cgi?id=1259859 - --------------------------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

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

Affected Products

Vendor	Product	Versions
SUSE	Linux Kernel (Live Patch 1 for SUSE Linux Enterprise 15 SP7)

Timeline

Apr 21, 2026 CVE Published

References

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