openSUSE Leap 15.5: kernel Important Denial of Service Vuln 2025:3740-1
opensuse
October 23, 2025
An update that solves four vulnerabilities can now be installed.
Description
This update for the Linux Kernel 5.14.21-150500_55_116 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).
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-2025-3740=1
* SUSE Linux Enterprise Live Patching 15-SP5
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2025-3740=1
Package List
* openSUSE Leap 15.5 (ppc64le s390x x86_64)
* kernel-livepatch-SLE15-SP5_Update_29-debugsource-5-150500.2.1
* kernel-livepatch-5_14_21-150500_55_116-default-5-150500.2.1
* kernel-livepatch-5_14_21-150500_55_116-default-debuginfo-5-150500.2.1
* SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
* kernel-livepatch-5_14_21-150500_55_116-default-5-150500.2.1
* kernel-livepatch-5_14_21-150500_55_116-default-debuginfo-5-150500.2.1
* SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x)
* kernel-livepatch-SLE15-SP5_Update_29-debugsource-5-150500.2.1
References
* bsc#1245794
* bsc#1248673
* bsc#1248749
* bsc#1249534
## References:
* https://www.suse.com/security/cve/CVE-2025-21971.html
* https://www.suse.com/security/cve/CVE-2025-38499.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=1248673
* https://bugzilla.suse.com/show_bug.cgi?id=1248749
* https://bugzilla.suse.com/show_bug.cgi?id=1249534
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Severity
important
Lowest
Low
Medium
High
Critical
Announcement ID: SUSE-SU-2025:3740-1
Release Date: 2025-10-23T05:46:28Z
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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