Security update for python-pyasn1

Announcement ID: SUSE-SU-2026:0300-1
Release Date: 2026-01-27T06:46:31Z
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:
  • SUSE Linux Enterprise High Performance Computing 12 SP5
  • SUSE Linux Enterprise Server 12 SP5
  • SUSE Linux Enterprise Server 12 SP5 LTSS
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  • SUSE Linux Enterprise Server for SAP Applications 12 SP5

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 Server 12 SP5 LTSS
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-300=1
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-300=1

Package List:

  • SUSE Linux Enterprise Server 12 SP5 LTSS (noarch)
    • python-pyasn1-0.1.9-4.11.1
    • python3-pyasn1-0.1.9-4.11.1
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (noarch)
    • python-pyasn1-0.1.9-4.11.1
    • python3-pyasn1-0.1.9-4.11.1

References: