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Alerts This Week
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SUSE Linux Enterprise 16 Kernel Major TCP Safety Alert SUSE-SU-2026-20606-6

suse
Calendar Grey March 5, 2026
Dist Suse Esm H88
Critical SUSE update for kernel addressing important tcp security issues. Ensure safety with latest patches.
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 Enterprise Server 16.0 zypper in -t patch SUSE-SLES-16.0-297=1 * SUSE Linux Enterprise Server for SAP Applications 16.0 zypper in -t patch SUSE-SLES-16.0-297=1 ## Package List: * SUSE Linux Enterprise Server 16.0 (ppc64le s390x x86_64) * kernel-livepatch-SLE16_Update_1-debugsource-4-160000.1.1 * kernel-livepatch-6_12_0-160000_6-default-4-160000.1.1

Topics%20covered

Topics Covered

security advisory security issue 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 Enterprise Server 16.0

* SUSE Linux Enterprise Server for SAP Applications 16.0

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-2026:20606-1
Release Date: 2026-02-18T16:13:19Z
Rating: important

Topics%20covered

Topics Covered

security advisory security issue SuSE important kernel TCP

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