SUSE-SU-2026:20447-1: important: Security update for python-pyasn1

[SLE-SECURITY-UPDATES]

# Security update for python-pyasn1

Announcement ID: SUSE-SU-2026:20447-1  
Release Date: 2026-02-16T14:23:19Z  
Rating: important  
References:

  * bsc#1256902

  
Cross-References:

  * CVE-2026-23490

  
CVSS scores:

  * CVE-2026-23490 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-23490 ( 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.

## Description:

This update for python-pyasn1 fixes the following issues:

  * CVE-2026-23490: Fixed malformed RELATIVE-OID with excessive continuation
    octets leading to Denial of Service (bsc#1256902).

## 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-6.0-580=1

## Package List:

  * SUSE Linux Micro 6.0 (noarch)
    * python311-pyasn1-0.5.0-3.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-23490.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1256902

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