Fedora 43 Python 3.6 Important DoS Vulnerability Fix CVE-2025-12084
fedora
March 16, 2026
Security fix for CVE-2025-12084
Summary
Python 3.6 package for developers.
This package exists to allow developers to test their code against an older
version of Python. This is not a full Python stack and if you wish to run
your applications with Python 3.6, see other distributions
that support it, such as CentOS or RHEL with Software Collections
or older Fedora releases.
Update Information:
Security fix for CVE-2025-12084
Topics Covered
Change Log
* Thu Feb 26 2026 Lumr Balhar
References
[ 1 ] Bug #2422521 - CVE-2025-12084 python3.6: cpython: Quadratic algorithm in xml.dom.minidom leads to denial of service [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2422521
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-8ba3403ff7' 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
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Name: python3.6
Product: Fedora 43
Version: 3.6.15
Release: 53.fc43
Summary: Version 3.6 of the Python interpreter
Topics Covered
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