Security update for python-pyasn1 SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2026:0252-1 Final 1 1 2026-01-22T16:06:32Z current 2026-01-22T16:06:32Z 2026-01-22T16:06:32Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for python-pyasn1 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) The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Image SLES15-SP4-BYOS-2026-252,Image SLES15-SP4-BYOS-Azure-2026-252,Image SLES15-SP4-BYOS-EC2-2026-252,Image SLES15-SP4-Hardened-BYOS-2026-252,Image SLES15-SP4-Hardened-BYOS-Azure-2026-252,Image SLES15-SP4-SAP-BYOS-2026-252,Image SLES15-SP4-SAP-BYOS-Azure-2026-252,Image SLES15-SP4-SAP-BYOS-EC2-2026-252,Image SLES15-SP4-SAP-Hardened-BYOS-2026-252,Image SLES15-SP4-SAP-Hardened-BYOS-Azure-2026-252,Image SLES15-SP5-Azure-3P-2026-252,Image SLES15-SP5-BYOS-Azure-2026-252,Image SLES15-SP5-BYOS-EC2-2026-252,Image SLES15-SP5-Hardened-BYOS-Azure-2026-252,Image SLES15-SP5-Hardened-BYOS-EC2-2026-252,Image SLES15-SP5-SAP-Azure-3P-2026-252,Image SLES15-SP5-SAP-BYOS-Azure-2026-252,Image SLES15-SP5-SAP-BYOS-EC2-2026-252,Image SLES15-SP5-SAP-Hardened-Azure-2026-252,Image SLES15-SP5-SAP-Hardened-BYOS-Azure-2026-252,Image SLES15-SP5-SAP-Hardened-BYOS-EC2-2026-252,Image SLES15-SP6-2026-252,Image SLES15-SP6-Azure-3P-2026-252,Image SLES15-SP6-Azure-Standard-2026-252,Image SLES15-SP6-BYOS-2026-252,Image SLES15-SP6-BYOS-Azure-2026-252,Image SLES15-SP6-BYOS-EC2-2026-252,Image SLES15-SP6-Hardened-BYOS-2026-252,Image SLES15-SP6-Hardened-BYOS-Azure-2026-252,Image SLES15-SP6-SAP-2026-252,Image SLES15-SP6-SAP-Azure-2026-252,Image SLES15-SP6-SAP-Azure-3P-2026-252,Image SLES15-SP6-SAP-BYOS-Azure-2026-252,Image SLES15-SP6-SAP-Hardened-2026-252,Image SLES15-SP6-SAP-Hardened-Azure-2026-252,Image SLES15-SP6-SAP-Hardened-BYOS-2026-252,Image SLES15-SP6-SAP-Hardened-BYOS-Azure-2026-252,Image SLES15-SP6-SAP-Hardened-BYOS-EC2-2026-252,Image SLES15-SP6-SAP-Hardened-EC2-2026-252,Image SLES15-SP6-SAPCAL-2026-252,Image SLES15-SP6-SAPCAL-Azure-2026-252,Image SLES15-SP7-Azure-3P-2026-252,Image SLES15-SP7-Azure-Basic-2026-252,Image SLES15-SP7-Azure-Standard-2026-252,Image SLES15-SP7-BYOS-Azure-2026-252,Image SLES15-SP7-BYOS-EC2-2026-252,Image SLES15-SP7-HPC-Azure-2026-252,Image SLES15-SP7-HPC-BYOS-Azure-2026-252,Image SLES15-SP7-HPC-BYOS-EC2-2026-252,Image SLES15-SP7-Hardened-BYOS-Azure-2026-252,Image SLES15-SP7-Hardened-BYOS-EC2-2026-252,Image SLES15-SP7-SAP-Azure-2026-252,Image SLES15-SP7-SAP-Azure-3P-2026-252,Image SLES15-SP7-SAP-BYOS-Azure-2026-252,Image SLES15-SP7-SAP-EC2-2026-252,Image SLES15-SP7-SAP-Hardened-Azure-2026-252,Image SLES15-SP7-SAP-Hardened-BYOS-Azure-2026-252,Image SLES15-SP7-SAP-Hardened-BYOS-EC2-2026-252,Image SLES15-SP7-SAPCAL-Azure-2026-252,SUSE-2026-252,SUSE-SLE-Module-Public-Cloud-15-SP4-2026-252,SUSE-SLE-Module-Python3-15-SP7-2026-252,SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-252,SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-252,SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-252,SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-252,SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-252,SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-252,SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-252,SUSE-SLE-Product-SLES_SAP-15-SP4-2026-252,SUSE-SLE-Product-SLES_SAP-15-SP5-2026-252,SUSE-SLE-Product-SLES_SAP-15-SP6-2026-252,openSUSE-SLE-15.6-2026-252 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2026/suse-su-20260252-1/ Link for SUSE-SU-2026:0252-1 https://lists.suse.com/pipermail/sle-security-updates/2026-January/023896.html E-Mail link for SUSE-SU-2026:0252-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1256902 SUSE Bug 1256902 https://www.suse.com/security/cve/CVE-2026-23490/ SUSE CVE CVE-2026-23490 page Image SLES15-SP4-BYOS Image SLES15-SP4-BYOS-Azure Image SLES15-SP4-BYOS-EC2 Image SLES15-SP4-Hardened-BYOS Image SLES15-SP4-Hardened-BYOS-Azure Image SLES15-SP4-SAP-BYOS Image SLES15-SP4-SAP-BYOS-Azure Image SLES15-SP4-SAP-BYOS-EC2 Image SLES15-SP4-SAP-Hardened-BYOS Image SLES15-SP4-SAP-Hardened-BYOS-Azure Image SLES15-SP5-Azure-3P Image SLES15-SP5-BYOS-Azure Image SLES15-SP5-BYOS-EC2 Image SLES15-SP5-Hardened-BYOS-Azure Image SLES15-SP5-Hardened-BYOS-EC2 Image SLES15-SP5-SAP-Azure-3P Image SLES15-SP5-SAP-BYOS-Azure Image SLES15-SP5-SAP-BYOS-EC2 Image 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SLES15-SP7-Hardened-BYOS-EC2 Image SLES15-SP7-SAP-Azure Image SLES15-SP7-SAP-Azure-3P Image SLES15-SP7-SAP-BYOS-Azure Image SLES15-SP7-SAP-EC2 Image SLES15-SP7-SAP-Hardened-Azure Image SLES15-SP7-SAP-Hardened-BYOS-Azure Image SLES15-SP7-SAP-Hardened-BYOS-EC2 Image SLES15-SP7-SAPCAL-Azure SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS SUSE Linux Enterprise Module for Public Cloud 15 SP4 SUSE Linux Enterprise Module for Python 3 15 SP7 SUSE Linux Enterprise Server 15 SP4-LTSS SUSE Linux Enterprise Server 15 SP5-LTSS SUSE Linux Enterprise Server 15 SP6-LTSS 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 openSUSE Leap 15.6 python311-pyasn1-0.5.0-150400.12.10.1 python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP4-BYOS python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP4-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP4-BYOS-EC2 python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP4-Hardened-BYOS python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP4-Hardened-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP4-SAP-BYOS python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP4-SAP-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP4-SAP-BYOS-EC2 python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP4-SAP-Hardened-BYOS python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP4-SAP-Hardened-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-Azure-3P python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-BYOS-EC2 python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-Hardened-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-Hardened-BYOS-EC2 python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-SAP-Azure-3P python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-SAP-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-SAP-BYOS-EC2 python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-SAP-Hardened-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-SAP-Hardened-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP5-SAP-Hardened-BYOS-EC2 python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6 python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-Azure-3P python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-Azure-Standard python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-BYOS python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-BYOS-EC2 python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-Hardened-BYOS python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-Hardened-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-SAP python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-SAP-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-SAP-Azure-3P python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-SAP-BYOS-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP6-SAP-Hardened python311-pyasn1-0.5.0-150400.12.10.1 as a 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python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP7-SAP-Hardened-BYOS-EC2 python311-pyasn1-0.5.0-150400.12.10.1 as a component of Image SLES15-SP7-SAPCAL-Azure python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise Module for Public Cloud 15 SP4 python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise Module for Python 3 15 SP7 python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise Server 15 SP4-LTSS python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise Server 15 SP5-LTSS python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise Server 15 SP6-LTSS python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP4 python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 python311-pyasn1-0.5.0-150400.12.10.1 as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 python311-pyasn1-0.5.0-150400.12.10.1 as a component of openSUSE Leap 15.6 pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2. CVE-2026-23490 Image SLES15-SP4-BYOS-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP4-BYOS-EC2:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP4-BYOS:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP4-Hardened-BYOS-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP4-Hardened-BYOS:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP4-SAP-BYOS-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP4-SAP-BYOS-EC2:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP4-SAP-BYOS:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP4-SAP-Hardened-BYOS-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP4-SAP-Hardened-BYOS:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP5-Azure-3P:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP5-BYOS-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP5-BYOS-EC2:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP5-Hardened-BYOS-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image 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SLES15-SP6-SAP-Azure-3P:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAP-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAP-BYOS-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAP-Hardened-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAP-Hardened-BYOS-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAP-Hardened-BYOS-EC2:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAP-Hardened-BYOS:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAP-Hardened-EC2:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAP-Hardened:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAP:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAPCAL-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6-SAPCAL:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP6:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP7-Azure-3P:python311-pyasn1-0.5.0-150400.12.10.1 Image 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SLES15-SP7-SAP-Hardened-BYOS-Azure:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP7-SAP-Hardened-BYOS-EC2:python311-pyasn1-0.5.0-150400.12.10.1 Image SLES15-SP7-SAPCAL-Azure:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise Module for Public Cloud 15 SP4:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise Module for Python 3 15 SP7:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise Server 15 SP4-LTSS:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise Server 15 SP5-LTSS:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise Server 15 SP6-LTSS:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise Server for SAP Applications 15 SP4:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise Server for SAP Applications 15 SP5:python311-pyasn1-0.5.0-150400.12.10.1 SUSE Linux Enterprise Server for SAP Applications 15 SP6:python311-pyasn1-0.5.0-150400.12.10.1 openSUSE Leap 15.6:python311-pyasn1-0.5.0-150400.12.10.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2026/suse-su-20260252-1/ https://www.suse.com/security/cve/CVE-2026-23490.html CVE-2026-23490 https://bugzilla.suse.com/1256902 SUSE Bug 1256902