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Fedora 43 python3.12 Security Upgrade for DoS CVE-2025-13836

Security fix for CVE-2025-13836. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-06aa85da91 2026-01-25 00:53:48.092825+00:00 -------------------------------------------------------------------------------- Name : python3.12 Product : Fedora 43 Version : 3.12.12 Release : 3.fc43 URL : https://www.python.org/ Summary : Version 3.12 of the Python interpreter Description : Python 3.12 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. The python3.12 package provides the "python3.12" executable: the reference interpreter for the Python language, version 3. The majority of its standard library is provided in the python3.12-libs package, which should be installed automatically along with python3.12. The remaining parts of the Python standard library are broken out into the python3.12-tkinter and python3.12-test packages, which may need to be installed separately. Documentation for Python is provided in the python3.12-docs package. Packages containing additional libraries for Python are generally named with the "python3.12-" prefix. -------------------------------------------------------------------------------- Update Information: Security fix for CVE-2025-13836 -------------------------------------------------------------------------------- ChangeLog: * Fri Jan 16 2026 Lumr Balhar - 3.12.12-3 - Security fix for CVE-2025-13836 -------------------------------------------------------------------------------- References: [ 1 ] Bug #2428943 - CVE-2025-13836 python3.12: Excessive read buffering DoS in http.client [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2428943 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnfupgrade --advisory FEDORA-2026-06aa85da91' 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 All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- . Security fix for python3.12 addresses excessive read buffering issue in Fedora 43, enhancing system stability.. Fedora Update, Python Security Fix, python3.12, DoS vulnerability, Fedora 43 advisory. . Severity: Important. LinuxSecurity.com Team

Jan 25, 2026 •Important Fedora