Security update for python-pyasn1

Announcement ID: SUSE-SU-2026:0252-1
Release Date: 2026-01-22T16:06:59Z
Rating: important
References:
Cross-References:
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:
  • openSUSE Leap 15.4
  • openSUSE Leap 15.6
  • Public Cloud Module 15-SP4
  • Python 3 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 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
  • SUSE Manager Proxy 4.3
  • SUSE Manager Retail Branch Server 4.3
  • SUSE Manager Server 4.3

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 15 SP4 LTSS
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-252=1
  • SUSE Linux Enterprise Server 15 SP5 LTSS
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-252=1
  • SUSE Linux Enterprise Server 15 SP6 LTSS
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-252=1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP4
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-252=1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP5
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-252=1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP6
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-252=1
  • openSUSE Leap 15.4
    zypper in -t patch SUSE-2026-252=1
  • openSUSE Leap 15.6
    zypper in -t patch openSUSE-SLE-15.6-2026-252=1
  • Public Cloud Module 15-SP4
    zypper in -t patch SUSE-SLE-Module-Public-Cloud-15-SP4-2026-252=1
  • Python 3 Module 15-SP7
    zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2026-252=1
  • SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-252=1
  • SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-252=1
  • SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-252=1
  • SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-252=1

Package List:

  • SUSE Linux Enterprise Server 15 SP4 LTSS (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • SUSE Linux Enterprise Server 15 SP5 LTSS (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • openSUSE Leap 15.4 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • openSUSE Leap 15.6 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • Public Cloud Module 15-SP4 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • Python 3 Module 15-SP7 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1
  • SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch)
    • python311-pyasn1-0.5.0-150400.12.10.1

References: