Fedora 43 python-ply Critical Unsafe Pickle Handling Fix 2026-516db080b7
fedora
March 29, 2026
Security fix for CVE-2025-56005
Summary
PLY is a straightforward lex/yacc implementation. Here is a list of its
essential features:
* It is implemented entirely in Python.
* It uses LR-parsing which is reasonably efficient and well suited for larger
grammars.
* PLY provides most of the standard lex/yacc features including support
for empty productions, precedence rules, error recovery, and support
for ambiguous grammars.
* PLY is straightforward to use and provides very extensive error checking.
* PLY doesn't try to do anything more or less than provide the basic lex/yacc
functionality. In other words, it's not a large parsing framework or a
component of some larger system.
Update Information:
Security fix for CVE-2025-56005
Topics Covered
Change Log
* Wed Mar 25 2026 Charalampos Stratakis
References
[ 1 ] Bug #2437981 - CVE-2025-56005 python-ply: Unsafe pickle file handling in Ply [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2437981
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-516db080b7' 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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Name: python-ply
Product: Fedora 43
Version: 3.11
Release: 33.fc43
Summary: Python Lex-Yacc
Topics Covered
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