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openSUSE: Kernel Important Security Update 2025:3717-1 CVE-2025-21971

opensuse
Calendar Grey October 22, 2025
Dist Opensuse Esm H88
Critical update for openSUSE's Linux kernel resolves several important security issues affecting system integrity.
An update that solves five vulnerabilities can now be installed.

Description

This update for the Linux Kernel 5.14.21-150400_24_167 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-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 denial of service security issue important 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 15.4

zypper in -t patch SUSE-2025-3717=1 SUSE-2025-3718=1 SUSE-2025-3719=1

* SUSE Linux Enterprise Live Patching 15-SP4

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2025-3719=1 SUSE-SLE-

Module-Live-Patching-15-SP4-2025-3717=1 SUSE-SLE-Module-Live-

Patching-15-SP4-2025-3718=1

Package List

* openSUSE Leap 15.4 (ppc64le s390x x86_64)

* kernel-livepatch-SLE15-SP4_Update_38-debugsource-8-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_39-debugsource-8-150400.2.1

* kernel-livepatch-5_14_21-150400_24_158-default-debuginfo-8-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_41-debugsource-7-150400.2.1

* kernel-livepatch-5_14_21-150400_24_161-default-8-150400.2.1

* kernel-livepatch-5_14_21-150400_24_167-default-7-150400.2.1

* kernel-livepatch-5_14_21-150400_24_161-default-debuginfo-8-150400.2.1

* kernel-livepatch-5_14_21-150400_24_158-default-8-150400.2.1

* kernel-livepatch-5_14_21-150400_24_167-default-debuginfo-7-150400.2.1

* SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)

* kernel-livepatch-SLE15-SP4_Update_38-debugsource-8-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_39-debugsource-8-150400.2.1

* kernel-livepatch-5_14_21-150400_24_158-default-debuginfo-8-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_41-debugsource-7-150400.2.1

*...

Read the Full Advisory

References

* bsc#1245794

* bsc#1246075

* bsc#1248673

* bsc#1248749

* bsc#1249534

## References:

* 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=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-2025:3717-1
Release Date: 2025-10-22T09:45:08Z
Affected Products: * openSUSE Leap 15.4 * SUSE Linux Enterprise High Performance Computing 15 SP4 * SUSE Linux Enterprise Live Patching 15-SP4 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Real Time 15 SP4 * SUSE Linux Enterprise Server 15 SP4 * SUSE Linux Enterprise Server for SAP Applications 15 SP4

Topics%20covered

Topics Covered

security advisory denial of service security issue important kernel OpenSUSE

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