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Ubuntu Server Release 20-04 Critical Patch UBUNTU-2023-56789-3

suse
Calendar Grey April 27, 2026
Dist Suse Esm H88
An important update for SUSE Linux Micro 6.0 addresses critical kernel vulnerabilities. Install recommended fixes.
An update that solves two vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.4.0-30.1 fixes various security issues The following security issues were fixed: * CVE-2025-40309: Bluetooth: SCO: Fix UAF on sco_conn_free (bsc#1255066). * 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: * SUSE Linux Micro 6.1 zypper in -t patch SUSE-SLE-Micro-6.1-kernel-358=1 ## Package List: * SUSE Linux Micro 6.1 (s390x x86_64) * kernel-livepatch-6_4_0-30-default-15-1.2 * kernel-livepatch-6_4_0-30-default-debuginfo-15-1.2

Topics%20covered

Topics Covered

security advisory important Bluetooth AppArmor local user access SUSE Linux Micro

References

* bsc#1255066

* bsc#1259859

Cross-

* CVE-2025-40309

* CVE-2026-23268

CVSS scores:

* 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

* 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

* CVE-2026-23268 ( 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

* 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

* 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

Affected Products:

* SUSE Linux Micro 6.1

An update that solves two vulnerabilities can now be installed.

##

* https://www.suse.com/security/cve/CVE-2025-40309.html

* https://www.suse.com/security/cve/CVE-2026-23268.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21295-1
Release Date: 2026-04-22T17:14:01Z
Rating: important

Topics%20covered

Topics Covered

security advisory important Bluetooth AppArmor local user access SUSE Linux Micro

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