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Critical Update for SUSE Linux Micro: Kernel Livepatch 2025:20612-1

suse
Calendar Grey August 29, 2025
Dist Suse Esm H88
Stay informed about essential enhancements for the SUSE kernel-livepatch that tackle significant security flaws and bolster overall system integrity.
* bsc#1245776 * bsc#1245793 * bsc#1245797 Cross-References:

Summary

## This update for kernel-livepatch-MICRO-6-0_Update_5 fixes the following issues: * CVE-2025-37752: net_sched: sch_sfq: move the limit validation (bsc#1245776) * CVE-2025-37797: net_sched: hfsc: Fix a UAF vulnerability in class handling (bsc#1245793) * CVE-2025-21702: pfifo_tail_enqueue: Drop new packet when sch->limit == 0 (bsc#1245797) ## 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-76=1 ## Package List: * SUSE Linux Micro 6.1 (s390x x86_64) * kernel-livepatch-6_4_0-25-default-5-1.2 * kernel-livepatch-MICRO-6-0_Update_5-debugsource-5-1.2

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important network attack kernel livepatch

References

* bsc#1245776

* bsc#1245793

* bsc#1245797

Cross-

* CVE-2025-21702

* CVE-2025-37752

* CVE-2025-37797

CVSS scores:

* CVE-2025-21702 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-37752 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-37797 ( SUSE ): 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 three vulnerabilities can now be installed.

##

* https://www.suse.com/security/cve/CVE-2025-21702.html

* https://www.suse.com/security/cve/CVE-2025-37752.html

* https://www.suse.com/security/cve/CVE-2025-37797.html

* https://bugzilla.suse.com/show_bug.cgi?id=1245776

* https://bugzilla.suse.com/show_bug.cgi?id=1245793

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2025:20612-1
Release Date: 2025-08-25T12:16:44Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important network attack kernel livepatch

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