openSUSE Leap 15.5 Kernel Important Update CVE-2025-21791 Advisory
opensuse
October 13, 2025
An update that solves three vulnerabilities can now be installed.
Description
This update for the Linux Kernel 5.14.21-150500_55_100 fixes several issues.
The following security issues were fixed:
* CVE-2024-53168: sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
(bsc#1243650).
* CVE-2025-38477: net/sched: sch_qfq: Fix race condition on qfq_aggregate
(bsc#1247315).
* CVE-2025-21791: vrf: use RCU protection in l3mdev_l3_out() (bsc#1240744).
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 15.5
zypper in -t patch SUSE-2025-3559=1 SUSE-2025-3564=1
* SUSE Linux Enterprise Live Patching 15-SP5
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2025-3559=1 SUSE-SLE-
Module-Live-Patching-15-SP5-2025-3564=1
Package List
* openSUSE Leap 15.5 (ppc64le s390x x86_64)
* kernel-livepatch-5_14_21-150500_55_100-default-7-150500.2.1
* kernel-livepatch-SLE15-SP5_Update_24-debugsource-8-150500.2.1
* kernel-livepatch-5_14_21-150500_55_97-default-debuginfo-8-150500.2.1
* kernel-livepatch-5_14_21-150500_55_97-default-8-150500.2.1
* kernel-livepatch-5_14_21-150500_55_100-default-debuginfo-7-150500.2.1
* kernel-livepatch-SLE15-SP5_Update_25-debugsource-7-150500.2.1
* SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
* kernel-livepatch-5_14_21-150500_55_100-default-7-150500.2.1
* kernel-livepatch-SLE15-SP5_Update_24-debugsource-8-150500.2.1
* kernel-livepatch-5_14_21-150500_55_97-default-debuginfo-8-150500.2.1
* kernel-livepatch-5_14_21-150500_55_97-default-8-150500.2.1
* kernel-livepatch-5_14_21-150500_55_100-default-debuginfo-7-150500.2.1
* kernel-livepatch-SLE15-SP5_Update_25-debugsource-7-150500.2.1
References
* bsc#1240744
* bsc#1243650
* bsc#1247315
## References:
* https://www.suse.com/security/cve/CVE-2024-53168.html
* https://www.suse.com/security/cve/CVE-2025-21791.html
* https://www.suse.com/security/cve/CVE-2025-38477.html
* https://bugzilla.suse.com/show_bug.cgi?id=1240744
* https://bugzilla.suse.com/show_bug.cgi?id=1243650
* https://bugzilla.suse.com/show_bug.cgi?id=1247315
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Severity
important
Lowest
Low
Medium
High
Critical
Announcement ID: SUSE-SU-2025:03559-1
Release Date: 2025-10-12T05:03:48Z
Affected Products:
* openSUSE Leap 15.5
* SUSE Linux Enterprise High Performance Computing 15 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 15 SP5
* SUSE Linux Enterprise Server for SAP Applications 15 SP5
Topics Covered
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