SUSE alert SUSE-SU-2026:0430-1 (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-2026:0430-1: important: Security update for python-pyasn1
Date:
             
 
Wed, 11 Feb 2026 16:31:36 -0000
Message-ID:
             
 
<177082749607.18402.16568726030107382335@smelt2.prg2.suse.org>


# Security update for python-pyasn1

Announcement ID: SUSE-SU-2026:0430-1  
Release Date: 2026-02-11T08:44:46Z  
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:

  * Basesystem Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  * SUSE Linux Enterprise Micro 5.2
  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Micro 5.5
  * SUSE Linux Enterprise Micro for Rancher 5.2
  * SUSE Linux Enterprise Micro for Rancher 5.3
  * SUSE Linux Enterprise Micro for Rancher 5.4
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server 15 SP4 LTSS
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server 15 SP5 LTSS
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP6 LTSS
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
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 Enterprise Micro for Rancher 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-430=1

  * SUSE Linux Enterprise Micro 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-430=1

  * SUSE Linux Enterprise Micro for Rancher 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-430=1

  * SUSE Linux Enterprise Micro 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-430=1

  * SUSE Linux Enterprise Micro 5.5  
    zypper in -t patch SUSE-SLE-Micro-5.5-2026-430=1

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-430=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-430=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-430=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-430=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-430=1

  * SUSE Linux Enterprise Server 15 SP4 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-430=1

  * SUSE Linux Enterprise Server 15 SP5 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-430=1

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-430=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP4  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-430=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP5  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-430=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-430=1

  * SUSE Linux Enterprise Micro 5.2  
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-430=1

  * SUSE Linux Enterprise Micro for Rancher 5.2  
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-430=1

## Package List:

  * SUSE Linux Enterprise Micro for Rancher 5.3 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Micro 5.3 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Micro for Rancher 5.4 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Micro 5.4 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Micro 5.5 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * Basesystem Module 15-SP7 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Micro 5.2 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1
  * SUSE Linux Enterprise Micro for Rancher 5.2 (noarch)
    * python3-pyasn1-0.4.2-150000.3.13.1

## References:

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



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