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SUSE Releases Essential Linux Kernel Security Update SUSE-SU-2025:02676-1

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Calendar Grey August 4, 2025
Scroller Suse
The latest patch from SUSE addresses various concerns within the Linux Kernel, improving both reliability and safety.
* bsc#1245776 * bsc#1245793 * bsc#1245797 Cross-References:

Summary

## This update for the Linux Kernel 5.14.21-150500_55_110 fixes several issues. The following security issues were fixed: * CVE-2025-37797: net_sched: hfsc: Fix a UAF vulnerability in class handling (bsc#1245793). * CVE-2025-37752: net_sched: sch_sfq: move the limit validation (bsc#1245776). * 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 Enterprise Live Patching 15-SP5 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2025-2669=1 SUSE-SLE- Module-Live-Patching-15-SP5-2025-2670=1 SUSE-SLE-Module-Live-

Topics%20covered

Topics Covered

security advisory denial of service SuSE important Linux kernel CVE

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:

* openSUSE Leap 15.5

* SUSE Linux Enterprise High Performance Computing 12 SP5

* SUSE Linux Enterprise High Performance Computing 15 SP5

* SUSE Linux Enterprise Live Patching 12-SP5

* SUSE Linux Enterprise Live Patching 15-SP5

* SUSE Linux Enterprise Micro 5.5

* SUSE Linux Enterprise Real Time 15 SP5

* SUSE Linux Enterprise Server 12 SP5

* SUSE Linux Enterprise Server 15 SP5

* SUSE Linux Enterprise Server for SAP Applications 12 SP5

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2025:02676-1
Release Date: 2025-08-04T14:09:09Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service SuSE important Linux kernel CVE

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