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SUSE Linux Micro 6.0 Kernel Important Fix Buffer Overflow 2026-20383-1

suse
Calendar Grey February 17, 2026
Dist Suse Esm H88
This important advisory presents security updates for the kernel of SUSE Linux Micro addressing critical vulnerabilities.
An update that solves two vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise kernel 6.4.0-35.1 fixes various security issues The following security issues were fixed: * CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() (bsc#1251787). * CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253437). ## 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 6.1 zypper in -t patch SUSE-SLE-Micro-6.1-kernel-248=1 ## Package List: * SUSE Linux Micro 6.1 (s390x x86_64) * kernel-livepatch-MICRO-6-0_Update_12-debugsource-4-1.1 * kernel-livepatch-6_4_0-35-default-4-1.1

Topics%20covered

Topics Covered

security advisory information leak buffer overflow important kernel SuSE Linux

References

* bsc#1251787

* bsc#1253437

Cross-

* CVE-2023-53676

* CVE-2025-40204

CVSS scores:

* CVE-2023-53676 ( SUSE ): 8.5

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

* CVE-2023-53676 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-53676 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-40204 ( SUSE ): 8.7

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

* CVE-2025-40204 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Products:

* SUSE Linux Micro 6.1

An update that solves two vulnerabilities can now be installed.

##

* https://www.suse.com/security/cve/CVE-2023-53676.html

* https://www.suse.com/security/cve/CVE-2025-40204.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:20383-1
Release Date: 2026-01-19T15:31:55Z
Rating: important

Topics%20covered

Topics Covered

security advisory information leak buffer overflow important kernel SuSE Linux

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