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SUSE Linux Enterprise 15 SP4 Kernel Patch 2026-0566-1 for CVE-2023-53321

suse
Calendar Grey February 17, 2026
Dist Suse Esm H88
SUSE Linux kernel update addresses multiple important vulnerabilities. Apply patches to enhance system security and stability.
An update that solves three vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise kernel 5.14.21-150400.24.176 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 15.4 zypper in -t patch SUSE-2026-566=1 * SUSE Linux Enterprise Live Patching 15-SP4 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-566=1 ## Package List:

Topics%20covered

Topics Covered

security advisory security issue SuSE important kernel out of bounds access

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-2026:0566-1
Release Date: 2026-02-17T06:33:41Z
Rating: important

Topics%20covered

Topics Covered

security advisory security issue SuSE important kernel out of bounds access

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