openSUSE: Critical Kernel Security Update for CVE-2025-21702, 2025:02693-1
opensuse
August 5, 2025
An update that solves three vulnerabilities and has one security fix can now be installed.
Description
This update for the Linux Kernel 6.4.0-150600_23_50 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).
Topics Covered
Patch
## 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:
* openSUSE Leap 15.6
zypper in -t patch SUSE-2025-2693=1
* SUSE Linux Enterprise Live Patching 15-SP6
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2025-2693=1
Package List
* openSUSE Leap 15.6 (ppc64le s390x x86_64)
* kernel-livepatch-6_4_0-150600_23_50-default-2-150600.2.1
* kernel-livepatch-6_4_0-150600_23_50-default-debuginfo-2-150600.2.1
* kernel-livepatch-SLE15-SP6_Update_11-debugsource-2-150600.2.1
* SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64)
* kernel-livepatch-6_4_0-150600_23_50-default-2-150600.2.1
* kernel-livepatch-6_4_0-150600_23_50-default-debuginfo-2-150600.2.1
* kernel-livepatch-SLE15-SP6_Update_11-debugsource-2-150600.2.1
References
* bsc#1244337
* bsc#1245776
* bsc#1245793
* bsc#1245797
## References:
* 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=1244337
* https://bugzilla.suse.com/show_bug.cgi?id=1245776
* https://bugzilla.suse.com/show_bug.cgi?id=1245793
* https://bugzilla.suse.com/show_bug.cgi?id=1245797
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Severity
important
Lowest
Low
Medium
High
Critical
Announcement ID: SUSE-SU-2025:02693-1
Release Date: 2025-08-05T07:34:43Z
Affected Products:
* openSUSE Leap 15.6
* SUSE Linux Enterprise Live Patching 15-SP6
* SUSE Linux Enterprise Real Time 15 SP6
* SUSE Linux Enterprise Server 15 SP6
* SUSE Linux Enterprise Server for SAP Applications 15 SP6
Topics Covered
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