SUSE alert SUSE-SU-2026:20133-1 (python-pyasn1)

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SLE-SECURITY-UPDATES <null@suse.de>
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sle-security-updates@lists.suse.com
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SUSE-SU-2026:20133-1: important: Security update for python-pyasn1
Date:
             
 
Wed, 28 Jan 2026 20:32:27 -0000
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<176963234767.9676.16660005578692181210@smelt2.prg2.suse.org>


# Security update for python-pyasn1

Announcement ID: SUSE-SU-2026:20133-1  
Release Date: 2026-01-22T16:35:43Z  
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 Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP Applications 16.0

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for python-pyasn1 fixes the following issues:

  * CVE-2026-23490: Fixed Denial-of-Service issue that may lead to memory
    exhaustion from malformed RELATIVE-OID with excessive continuation octets
    (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 Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-178=1

  * SUSE Linux Enterprise Server for SAP Applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-178=1

## Package List:

  * SUSE Linux Enterprise Server 16.0 (noarch)
    * python313-pyasn1-0.6.1-160000.3.1
  * SUSE Linux Enterprise Server for SAP Applications 16.0 (noarch)
    * python313-pyasn1-0.6.1-160000.3.1

## References:

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



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