Alerts This Week
Warning Icon 1 640
Alerts This Week
Warning Icon 1 640

SUSE Linux Enterprise 16 Kernel Important Security Update 2026-21555-1

suse
Calendar Grey May 11, 2026
Dist Suse Esm H88
SUSE 16 Live Patch solves seven important issues in the kernel, enhancing system security with crucial updates. Install promptly.
An update that solves seven vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.5.1 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 DoS patch important kernel

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-2026:21555-1
Release Date: 2026-05-05T19:50:41Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE DoS patch important kernel

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here