Fedora 43: python3.14 Critical Update Addresses Quadratic Complexity Bug
fedora
December 10, 2025
This is the second maintenance release of Python 3.14
Summary
Python 3.14 is an accessible, high-level, dynamically typed, interpreted
programming language, designed with an emphasis on code readability.
It includes an extensive standard library, and has a vast ecosystem of
third-party libraries.
Update Information:
This is the second maintenance release of Python 3.14
Topics Covered
Change Log
* Fri Dec 5 2025 Miro Hron\u010dok
References
[ 1 ] Bug #2393850 - kicad crashes during python runtime initialization
https://bugzilla.redhat.com/show_bug.cgi?id=2393850
[ 2 ] Bug #2413058 - CVE-2025-6075 python3.14: Quadratic complexity in os.path.expandvars() with user-controlled template [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2413058
[ 3 ] Bug #2414940 - argparse colorize fails if a tty is not available, like in mod_wsgi
https://bugzilla.redhat.com/show_bug.cgi?id=2414940
[ 4 ] Bug #2416523 - Python 3.14 Stack overflow check very very broken
https://bugzilla.redhat.com/show_bug.cgi?id=2416523
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-e235793f10' 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: python3.14
Product: Fedora 43
Version: 3.14.2
Release: 1.fc43
Summary: Version 3.14 of the Python interpreter
Topics Covered
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