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openSUSE Leap 15.5 Kernel Important Security Update 1077-1

suse
Calendar Grey March 26, 2026
Dist Suse Esm H88
Protect your system with SUSE's important kernel update addressing 13 issues and security fixes.
An update that solves 13 vulnerabilities, contains one feature and has two security fixes can now be installed.

Summary

## The SUSE Linux Enterprise 15 SP5 RT kernel was updated to fix various security issues The following security issues were fixed: * CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the allocated buffer (bsc#1238917). * CVE-2025-40242: gfs2: Fix unlikely race in gdlm_put_lock (bsc#1255075). * CVE-2025-71066: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (bsc#1256645). * CVE-2026-23004: dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list() (bsc#1257231). * CVE-2026-23060: crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec (bsc#1257735). * CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc (bsc#1257749).

Topics%20covered

Topics Covered

security advisory kernel security important system update security fixes OpenSUSE

References

* bsc#1238917

* bsc#1255075

* bsc#1256645

* bsc#1257231

* bsc#1257473

* bsc#1257732

* bsc#1257735

* bsc#1257749

* bsc#1257790

* bsc#1258340

* bsc#1258395

* bsc#1258518

* bsc#1258849

* bsc#1258850

* bsc#1259857

* jsc#PED-12836

Cross-

* CVE-2025-21738

* CVE-2025-40242

* CVE-2025-71066

* CVE-2026-23004

* CVE-2026-23054

* CVE-2026-23060

* CVE-2026-23074

* CVE-2026-23089

* CVE-2026-23191

* CVE-2026-23204

* CVE-2026-23209

* CVE-2026-23268

* CVE-2026-23269

CVSS scores:

* CVE-2025-21738 ( SUSE ): 7.3

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

* CVE-2025-21738 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-21738 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-40242 ( SUSE ): 7.3

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1077-1
Release Date: 2026-03-26T12:42:31Z
Rating: important

Topics%20covered

Topics Covered

security advisory kernel security important system update security fixes OpenSUSE

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