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SUSE Linux Kernel 5.14.21-150500 Important Security Update 2026-0542-1

suse
Calendar Grey February 16, 2026
Dist Suse Esm H88
An important security update for SUSE Linux kernel addresses multiple vulnerabilities to enhance system safety.
An update that solves three vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise kernel 5.14.21-150500.55.121 fixes various security issues The following security issues were fixed: * CVE-2023-53321: wifi: mac80211_hwsim: drop short frames (bsc#1250314). * CVE-2025-38111: net/mdiobus: Fix potential out-of-bounds read/write access (bsc#1249455). * CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249480). ## 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-2026-542=1 * SUSE Linux Enterprise Live Patching 15-SP5 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-542=1 ## Package List:

Topics%20covered

Topics Covered

security advisory security issue SuSE DoS important kernel

References

* bsc#1249455

* bsc#1249480

* bsc#1250314

Cross-

* CVE-2023-53321

* CVE-2025-38111

* CVE-2025-39742

CVSS scores:

* CVE-2023-53321 ( SUSE ): 7.3

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2023-53321 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-53321 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

* CVE-2023-53321 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

* CVE-2025-38111 ( SUSE ): 7.3

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2025-38111 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-38111 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

* CVE-2025-39742 ( SUSE ): 7.3

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:0542-1
Release Date: 2026-02-15T16:03:51Z
Rating: important

Topics%20covered

Topics Covered

security advisory security issue SuSE DoS important kernel

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