Bug 2421636

Summary:	CVE-2025-12084 python3.11: cpython: Quadratic algorithm in xml.dom.minidom leads to denial of service [fedora-43]
Product:	[Fedora] Fedora	Reporter:	Marco Benatto <mbenatto>
Component:	python3.11	Assignee:	Python Maintainers <python-maint>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	43	CC:	cstratak, mhroncok, python-maint, python-packagers-sig, thrnciar, torsava, vstinner
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["974db348-f264-4459-9e17-efe82233b482"]}
Fixed In Version:	python3.11-3.11.14-4.fc43	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-01-25 00:54:28 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2418655

Description Marco Benatto 2025-12-11 22:03:33 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams

Comment 1 Fedora Update System 2026-01-12 12:09:13 UTC

FEDORA-2026-ae53859fe8 (python3.11-3.11.14-3.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-ae53859fe8

Comment 2 Fedora Update System 2026-01-13 01:28:21 UTC

FEDORA-2026-ae53859fe8 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-ae53859fe8`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-ae53859fe8

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 3 Fedora Update System 2026-01-17 01:07:55 UTC

FEDORA-2026-36e1e6958c has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-36e1e6958c`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-36e1e6958c

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-01-25 00:54:28 UTC

FEDORA-2026-36e1e6958c (python3.11-3.11.14-4.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.