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openSUSE 15.5 Kernel Important Security Update 2025:3734-1 CVE-2025-21971

opensuse
Calendar Grey October 22, 2025
Dist Opensuse Esm H88
An important security update addressing six vulnerabilities in the Linux Kernel for openSUSE users is available.
An update that solves six vulnerabilities can now be installed.

Description

This update for the Linux Kernel 5.14.21-150500_55_83 fixes several issues.

The following security issues were fixed:

* CVE-2025-38678: netfilter: nf_tables: reject duplicate device on updates

(bsc#1249534).

* CVE-2025-38499: clone_private_mnt(): make sure that caller has CAP_SYS_ADMIN

in the right userns (bsc#1248673).

* CVE-2024-49974: NFSD: Force all NFSv4.2 COPY requests to be synchronous

(bsc#1232384).

* CVE-2025-21971: net_sched: Prevent creation of classes with TC_H_ROOT

(bsc#1245794).

* CVE-2025-38644: wifi: mac80211: reject TDLS operations when station is not

associated (bsc#1248749).

* CVE-2025-38206: exfat: fix double free in delayed_free (bsc#1246075).

Topics%20covered

Topics Covered

security advisory security issue important kernel Linux kernel OpenSUSE

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-2025-3734=1

* SUSE Linux Enterprise Live Patching 15-SP5

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2025-3734=1

Package List

* openSUSE Leap 15.5 (ppc64le s390x x86_64)

* kernel-livepatch-5_14_21-150500_55_83-default-debuginfo-17-150500.2.1

* kernel-livepatch-SLE15-SP5_Update_20-debugsource-17-150500.2.1

* kernel-livepatch-5_14_21-150500_55_83-default-17-150500.2.1

* SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)

* kernel-livepatch-5_14_21-150500_55_83-default-debuginfo-17-150500.2.1

* kernel-livepatch-SLE15-SP5_Update_20-debugsource-17-150500.2.1

* kernel-livepatch-5_14_21-150500_55_83-default-17-150500.2.1

References

* bsc#1232384

* bsc#1245794

* bsc#1246075

* bsc#1248673

* bsc#1248749

* bsc#1249534

## References:

* https://www.suse.com/security/cve/CVE-2024-49974.html

* https://www.suse.com/security/cve/CVE-2025-21971.html

* https://www.suse.com/security/cve/CVE-2025-38206.html

* https://www.suse.com/security/cve/CVE-2025-38499.html

* https://www.suse.com/security/cve/CVE-2025-38644.html

* https://www.suse.com/security/cve/CVE-2025-38678.html

* https://bugzilla.suse.com/show_bug.cgi?id=1232384

* https://bugzilla.suse.com/show_bug.cgi?id=1245794

* https://bugzilla.suse.com/show_bug.cgi?id=1246075

* https://bugzilla.suse.com/show_bug.cgi?id=1248673

* https://bugzilla.suse.com/show_bug.cgi?id=1248749

* https://bugzilla.suse.com/show_bug.cgi?id=1249534

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2025:3734-1
Release Date: 2025-10-22T17:04:44Z
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%20covered

Topics Covered

security advisory security issue important kernel Linux kernel OpenSUSE

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