Security update for python-pyasn1

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