Bug 2525128

Summary: CVE-2026-7774 mingw-python3: Python tarfile: Arbitrary file write via crafted link entries [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: mingw-python3Assignee: Sandro Mani <manisandro>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: manisandro
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["7a19d553-e02b-4d1a-a8a1-6b5514246c3c"]}
Fixed In Version: mingw-python3-3.11.16-1.fc45 mingw-python3-3.11.16-1.fc44 mingw-python3-3.11.16-1.fc43 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-09-27 00:28:41 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: 2484827    

Description Ganesh 2026-08-27 17:06:33 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.

tarfile.data_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() to write files outside the destination directory, subject to the permissions of the extracting process.

Comment 1 Fedora Update System 2026-09-18 17:49:21 UTC
FEDORA-2026-cee8eac8cc (mingw-python3-3.11.16-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-cee8eac8cc

Comment 2 Fedora Update System 2026-09-18 17:49:21 UTC
FEDORA-2026-9359fb439f (mingw-python3-3.11.16-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-9359fb439f

Comment 3 Fedora Update System 2026-09-18 17:49:22 UTC
FEDORA-2026-19a92359f8 (mingw-python3-3.11.16-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-19a92359f8

Comment 4 Fedora Update System 2026-09-19 01:40:06 UTC
FEDORA-2026-19a92359f8 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-2026-19a92359f8`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-19a92359f8

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

Comment 5 Fedora Update System 2026-09-19 02:19:03 UTC
FEDORA-2026-cee8eac8cc 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-cee8eac8cc`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-cee8eac8cc

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

Comment 6 Fedora Update System 2026-09-19 02:22:55 UTC
FEDORA-2026-9359fb439f 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-2026-9359fb439f`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-9359fb439f

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

Comment 7 Fedora Update System 2026-09-27 00:28:41 UTC
FEDORA-2026-19a92359f8 (mingw-python3-3.11.16-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 8 Fedora Update System 2026-09-27 00:57:09 UTC
FEDORA-2026-cee8eac8cc (mingw-python3-3.11.16-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 9 Fedora Update System 2026-09-27 01:12:02 UTC
FEDORA-2026-9359fb439f (mingw-python3-3.11.16-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.