Bug 2508373

Summary:	CVE-2026-29509 patool: Patool: Arbitrary file write via path traversal in archive extraction [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Oleg Sushchenko <osushche>
Component:	patool	Assignee:	fedepell <fede>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	45	CC:	fede, gui1ty
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["5268e391-de92-43ff-b093-583b56a7365b"]}
Fixed In Version:	patool-4.1.0-1.fc46 patool-4.1.0-1.fc45 patool-4.1.0-1.fc44	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-09-13 05:16:37 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:

Description Oleg Sushchenko 2026-07-29 11:14:36 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.

Patool before 4.0.5 contains a path traversal vulnerability in the safe_extract() function in patoolib/programs/py_tarfile.py when running on Python before 3.12, where the is_within_directory() helper uses os.path.commonprefix() for character-level string comparison instead of path-level comparison, allowing a crafted archive member path to bypass the containment check. Attackers can supply a malicious archive with specially crafted member paths to write arbitrary files.

Comment 1 Aoife Moloney 2026-08-17 15:40:16 UTC

This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.

Comment 2 Fedora Update System 2026-09-13 05:12:21 UTC

FEDORA-2026-d38857d084 (patool-4.1.0-1.fc46) has been submitted as an update to Fedora 46.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-d38857d084

Comment 3 Fedora Update System 2026-09-13 05:16:37 UTC

FEDORA-2026-d38857d084 (patool-4.1.0-1.fc46) has been pushed to the Fedora 46 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 4 Fedora Update System 2026-09-13 05:32:02 UTC

FEDORA-2026-3a35235bd6 (patool-4.1.0-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-3a35235bd6

Comment 5 Fedora Update System 2026-09-13 05:50:42 UTC

FEDORA-2026-23dc582dae (patool-4.1.0-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-23dc582dae

Comment 6 Fedora Update System 2026-09-14 01:29:14 UTC

FEDORA-2026-3a35235bd6 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-3a35235bd6`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-3a35235bd6

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

Comment 7 Fedora Update System 2026-09-14 02:04:42 UTC

FEDORA-2026-23dc582dae has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-23dc582dae`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-23dc582dae

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

Comment 8 Fedora Update System 2026-09-22 00:16:05 UTC

FEDORA-2026-3a35235bd6 (patool-4.1.0-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 9 Fedora Update System 2026-09-22 00:53:48 UTC

FEDORA-2026-23dc582dae (patool-4.1.0-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.