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Fedora 42 python-pyasn1 Important Security Patch 2026-ae123f7b4

fedora
Calendar Grey February 22, 2026
Dist Fedora Esm H88
Fedora 42 python-pyasn1 update addresses DoS risks from malformed data affecting app performance and stability.
Update for python-pyasn1-0.6.2-1.fc42

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.fc42. Changelog * Thu Feb 05 2026 Simon Pichugin - 0.6.2-1 - Update to 0.6.2 - Fixed continuation octet limits in OID/RELATIVE-OID decoder (CVE-2026-23490)

Topics%20covered

Topics Covered

security advisory fedora update DoS vulnerability python-pyasn1

Change Log

* Thu Feb 5 2026 Simon Pichugin - 0.6.2-1 - Update to 0.6.2 - Fixed continuation octet limits in OID/RELATIVE-OID decoder (CVE-2026-23490)

References


[ 1 ] Bug #2437015 - python-pyasn1-0.6.2 is available [f42] https://bugzilla.redhat.com/show_bug.cgi?id=2437015 [ 2 ] Bug #2438395 - CVE-2026-23490 python-pyasn1: pyasn1: Denial of Service due to memory exhaustion from malformed RELATIVE-OID [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2438395

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-ddafe1357a' 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

Severity
important
Lowest
Low
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Name: python-pyasn1
Product: Fedora 42
Version: 0.6.2
Release: 1.fc42
URL: https://github.com/pyasn1/pyasn1
Summary: ASN.1 tools for Python

Topics%20covered

Topics Covered

security advisory fedora update DoS vulnerability python-pyasn1

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