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SUSE Linux Enterprise 12 SP5 Kernel Important Security Update 2026-1285-1

suse
Calendar Grey April 13, 2026
Dist Suse Esm H88
Critical update for SUSE Linux Kernel addresses seven security issues, enhancing system stability and protection.
An update that solves seven vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 4.12.14-122.258 fixes various security issues The following security issues were fixed: * CVE-2023-53794: cifs: fix session state check in reconnect to avoid use- after-free issue (bsc#1255235). * CVE-2025-39973: i40e: add validation for ring_len param (bsc#1252036). * CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc#1252689). * CVE-2025-71120: SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf (bsc#1256780). * CVE-2026-22999: net/sched: sch_qfq: do not free existing class in qfq_change_class() (bsc#1257238). * CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc (bsc#1258051). * CVE-2026-23209: macvlan: fix error recovery in macvlan_common_newlink()

Topics%20covered

Topics Covered

security advisory security issue DoS important kernel SUSE Linux Enterprise

References

* bsc#1252036

* bsc#1252689

* bsc#1255235

* bsc#1256780

* bsc#1257238

* bsc#1258051

* bsc#1258784

Cross-

* CVE-2023-53794

* CVE-2025-39973

* CVE-2025-40018

* CVE-2025-71120

* CVE-2026-22999

* CVE-2026-23074

* CVE-2026-23209

CVSS scores:

* CVE-2023-53794 ( SUSE ): 7.7

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

* CVE-2023-53794 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-39973 ( 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-2025-39973 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-40018 ( 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-2025-40018 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1285-1
Release Date: 2026-04-12T19:04:23Z
Rating: important

Topics%20covered

Topics Covered

security advisory security issue DoS important kernel SUSE Linux Enterprise

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