Fedora Linux 9225 Published by

Fedora 43 and Fedora 42 have received updates for the python3.9 package, which is version 3.9.25 in both cases. The update fixes a security issue (CVE-2025-12084) that could lead to a denial of service when using xml.dom.minidom with Python's cpython implementation

Fedora 43 Update: python3.9-3.9.25-3.fc43
Fedora 42 Update: python3.9-3.9.25-3.fc42




[SECURITY] Fedora 43 Update: python3.9-3.9.25-3.fc43


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Fedora Update Notification
FEDORA-2026-975a15098b
2026-01-24 01:41:37.895567+00:00
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Name : python3.9
Product : Fedora 43
Version : 3.9.25
Release : 3.fc43
URL : https://www.python.org/
Summary : Version 3.9 of the Python interpreter
Description :
Python 3.9 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 3.9, see other distributions
that support it, such as CentOS or RHEL or older Fedora releases.

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Update Information:

Security fix for CVE-2025-12084
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ChangeLog:

* Wed Jan 14 2026 Lum??r Balhar [lbalhar@redhat.com] - 3.9.25-3
- Security fix for CVE-2025-12084
* Mon Nov 10 2025 Tomas Orsava [torsava@redhat.com] - 3.9.25-2
- Move _sysconfigdata_d_linux*.py to the debug subpackage
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References:

[ 1 ] Bug #2422522 - CVE-2025-12084 python3.9: cpython: Quadratic algorithm in xml.dom.minidom leads to denial of service [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2422522
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2026-975a15098b' 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
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[SECURITY] Fedora 42 Update: python3.9-3.9.25-3.fc42


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Fedora Update Notification
FEDORA-2026-43e2b1e209
2026-01-24 01:36:32.972058+00:00
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Name : python3.9
Product : Fedora 42
Version : 3.9.25
Release : 3.fc42
URL : https://www.python.org/
Summary : Version 3.9 of the Python interpreter
Description :
Python 3.9 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 3.9, see other distributions
that support it, such as CentOS or RHEL or older Fedora releases.

--------------------------------------------------------------------------------
Update Information:

Security fix for CVE-2025-12084
--------------------------------------------------------------------------------
ChangeLog:

* Wed Jan 14 2026 Lum??r Balhar [lbalhar@redhat.com] - 3.9.25-3
- Security fix for CVE-2025-12084
* Mon Nov 10 2025 Tomas Orsava [torsava@redhat.com] - 3.9.25-2
- Move _sysconfigdata_d_linux*.py to the debug subpackage
--------------------------------------------------------------------------------
References:

[ 1 ] Bug #2422519 - CVE-2025-12084 python3.9: cpython: Quadratic algorithm in xml.dom.minidom leads to denial of service [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2422519
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2026-43e2b1e209' 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
--------------------------------------------------------------------------------