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Debian GNU/Linux 12.0 FPC-SU-2023-64218-4 Important Kernel Update Fix

suse
Calendar Grey May 7, 2026
Scroller Suse
SUSE Linux Micro update addresses important kernel security issues fixing six identified flaws. Install recommended updates.
An update that solves six vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.4.0-29.1 fixes various security issues The following security issues were fixed: * CVE-2025-38375: virtio-net: ensure the received length does not exceed allocated size (bsc#1258073). * 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-2026-31431: crypto: algif_aead - Revert to operating out-of-place (bsc#1263689). ## Patch Instructions:

Topics%20covered

Topics Covered

security advisory security update important kernel SUSE Linux Micro six issues

References

* bsc#1252048

* bsc#1258005

* bsc#1258073

* bsc#1258655

* bsc#1259126

* bsc#1263689

Cross-

* CVE-2025-38375

* CVE-2025-39977

* CVE-2025-71066

* CVE-2026-23004

* CVE-2026-23204

* CVE-2026-31431

CVSS scores:

* CVE-2025-38375 ( 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-2025-38375 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-38375 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* 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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21501-1
Release Date: 2026-05-05T13:15:07Z
Rating: important

Topics%20covered

Topics Covered

security advisory security update important kernel SUSE Linux Micro six issues

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