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SUSE Linux Micro: libtasn1 Moderate Buffer Overflow Fix 2026:20051-1

suse
Calendar Grey January 15, 2026
Dist Suse Esm H88
Update for SUSE libtasn1 resolves a moderate buffer overflow risk. Recommended installation methods include YaST and zypper.
An update that solves one vulnerability can now be installed.

Summary

## This update for libtasn1 fixes the following issues: * CVE-2025-13151: lack of validation of input data size leads to stack-based buffer overflow in `asn1_expend_octet_string` (bsc#1256341). ## 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 6.0 zypper in -t patch SUSE-SLE-Micro-6.0-558=1 ## Package List: * SUSE Linux Micro 6.0 (aarch64 s390x x86_64) * libtasn1-6-4.19.0-5.1 * libtasn1-6-debuginfo-4.19.0-5.1 * libtasn1-debugsource-4.19.0-5.1

Topics%20covered

Topics Covered

security advisory moderate buffer overflow SuSE attack libtasn1

References

* bsc#1256341

Cross-

* CVE-2025-13151

CVSS scores:

* CVE-2025-13151 ( SUSE ): 6.9

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

* CVE-2025-13151 ( SUSE ): 6.6 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

* CVE-2025-13151 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

* SUSE Linux Micro 6.0

An update that solves one vulnerability can now be installed.

##

* https://www.suse.com/security/cve/CVE-2025-13151.html

* https://bugzilla.suse.com/show_bug.cgi?id=1256341

Announcement ID: SUSE-SU-2026:20051-1
Release Date: 2026-01-12T12:00:25Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate buffer overflow SuSE attack libtasn1

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