SUSE-SU-2026:0118-1: moderate: Security update for libtasn1

[SLE-SECURITY-UPDATES]

# Security update for libtasn1

Announcement ID: SUSE-SU-2026:0118-1  
Release Date: 2026-01-13T06:46:55Z  
Rating: moderate  
References:

  * bsc#1256341

  
Cross-References:

  * 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 Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for libtasn1 fixes the following issues:

  * CVE-2025-13151: 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 Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-118=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * libtasn1-6-debuginfo-32bit-4.9-3.19.1
    * libtasn1-debugsource-4.9-3.19.1
    * libtasn1-6-32bit-4.9-3.19.1
    * libtasn1-debuginfo-4.9-3.19.1
    * libtasn1-6-4.9-3.19.1
    * libtasn1-devel-4.9-3.19.1
    * libtasn1-4.9-3.19.1
    * libtasn1-6-debuginfo-4.9-3.19.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-13151.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1256341

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