Fedora 43 python-pyasn1 Critical Denial of Service Vulnerability News
fedora
February 22, 2026
Update for python-pyasn1-0.6.2-1.fc43
Summary
This is an implementation of ASN.1 types and codecs in the Python programming
language.
Update Information:
Update for python-pyasn1-0.6.2-1.fc43.
Changelog
* Thu Feb 05 2026 Simon Pichugin
Topics Covered
Change Log
* Thu Feb 5 2026 Simon Pichugin
References
[ 1 ] Bug #2437014 - python-pyasn1-0.6.2 is available [f43]
https://bugzilla.redhat.com/show_bug.cgi?id=2437014
[ 2 ] Bug #2438396 - CVE-2026-23490 python-pyasn1: pyasn1: Denial of Service due to memory exhaustion from malformed RELATIVE-OID [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2438396
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-0179c9b8ac' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Severity
important
Lowest
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Critical
Name: python-pyasn1
Product: Fedora 43
Version: 0.6.2
Release: 1.fc43
Summary: ASN.1 tools for Python
Topics Covered
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