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Fedora 42 Python3.6 Significant DoS Security Update for CVE-2025-12084

fedora
Calendar Grey March 16, 2026
Dist Fedora Esm H88
Critical security fix for python3.6 in Fedora 42 addresses denial of service risks.
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%20covered

Topics Covered

security advisory denial of service fedora important CVE fix python3.6

Change Log

* Thu Feb 26 2026 Lumr Balhar - 3.6.15-53 - Security fix for CVE-2025-12084

References


[ 1 ] Bug #2422518 - CVE-2025-12084 python3.6: cpython: Quadratic algorithm in xml.dom.minidom leads to denial of service [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2422518

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-dd37d41d7f' 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
Medium
High
Critical

Name: python3.6
Product: Fedora 42
Version: 3.6.15
Release: 53.fc42
URL: https://www.python.org/
Summary: Version 3.6 of the Python interpreter

Topics%20covered

Topics Covered

security advisory denial of service fedora important CVE fix python3.6

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