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SUSE Linux Micro 6.2 Kernel Important TCP Issue Update 2026-20541-1

suse
Calendar Grey March 5, 2026
Dist Suse Esm H88
An important update for SUSE Linux Enterprise kernel addresses a critical issue and enhances security measures.
An update that solves one vulnerability can now be installed.

Summary

## This update for the SUSE Linux Enterprise kernel 6.12.0-160000.6.1 fixes one security issue The following security issue was fixed: * CVE-2025-40186: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request() (bsc#1253439). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * SUSE Linux Micro 6.2 zypper in -t patch SUSE-SL-Micro-6.2-297=1 ## Package List: * SUSE Linux Micro 6.2 (ppc64le s390x x86_64) * kernel-livepatch-6_12_0-160000_6-default-4-160000.1.1 * kernel-livepatch-SLE16_Update_1-debugsource-4-160000.1.1 * kernel-livepatch-6_12_0-160000_6-default-debuginfo-4-160000.1.1

Topics%20covered

Topics Covered

security advisory SuSE important kernel TCP

References

* bsc#1253439

Cross-

* CVE-2025-40186

CVSS scores:

* CVE-2025-40186 ( 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-2025-40186 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:

* SUSE Linux Micro 6.2

An update that solves one vulnerability can now be installed.

##

* https://www.suse.com/security/cve/CVE-2025-40186.html

* https://bugzilla.suse.com/show_bug.cgi?id=1253439

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:20541-1
Release Date: 2026-02-18T16:13:19Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE important kernel TCP

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