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SUSE Linux Micro 6.2 Kernel Important Update 2026-21591-1

suse
Calendar Grey May 15, 2026
Dist Suse Esm H88
Critical update for SUSE Linux Kernel addresses multiple threats and strengthens security. Be sure to install this patch to protect your system.
An update that solves seven vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.8.1 fixes various security issues The following security issues were fixed: * CVE-2025-39977: futex: Prevent use-after-free during requeue-PI (bsc#1252048). * CVE-2025-71066: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (bsc#1258005). * CVE-2026-23004: dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list() (bsc#1258655). * CVE-2026-23204: net/sched: cls_u32: use skb_header_pointer_careful() (bsc#1259126). * CVE-2026-23437: net: shaper: protect late read accesses to the hierarchy (bsc#1261845). * CVE-2026-31406: xfrm: Fix work re-schedule after cancel in xfrm_nat_keepalive_net_fini() (bsc#1261630).

Topics%20covered

Topics Covered

security advisory SuSE threat important kernel live patch

References

* bsc#1252048

* bsc#1258005

* bsc#1258655

* bsc#1259126

* bsc#1261630

* bsc#1261845

* bsc#1263689

Cross-

* CVE-2025-39977

* CVE-2025-71066

* CVE-2026-23004

* CVE-2026-23204

* CVE-2026-23437

* CVE-2026-31406

* CVE-2026-31431

CVSS scores:

* CVE-2025-39977 ( 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-2025-39977 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-71066 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-23004 ( 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-2026-23004 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-23004 ( NVD ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21591-1
Release Date: 2026-05-08T08:30:42Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE threat important kernel live patch

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