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SUSE 15 SP7 python-pyasn1 Important Denial of Service 2026-0430-1

suse
Calendar Grey February 11, 2026
Dist Suse Esm H88
An important security update for python-pyasn1 addresses a denial of service threat. Update is now available for installation.
An update that solves one vulnerability can now be installed.

Summary

## 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

Topics%20covered

Topics Covered

security advisory denial of service update SuSE important python-pyasn1

References

* bsc#1256902

Cross-

* 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

Severity
important
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

security advisory denial of service update SuSE important python-pyasn1

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