Bug 2525128 - CVE-2026-7774 mingw-python3: Python tarfile: Arbitrary file write via crafted link entries [fedora-all]
Summary: CVE-2026-7774 mingw-python3: Python tarfile: Arbitrary file write via crafted...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: mingw-python3
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Sandro Mani
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["7a19d553-e02b-4d1a-a8a1-6...
Depends On:
Blocks: CVE-2026-7774
TreeView+ depends on / blocked
 
Reported: 2026-08-27 17:06 UTC by Ganesh
Modified: 2026-09-27 01:12 UTC (History)
1 user (show)

Fixed In Version: mingw-python3-3.11.16-1.fc45 mingw-python3-3.11.16-1.fc44 mingw-python3-3.11.16-1.fc43
Clone Of:
Environment:
Last Closed: 2026-09-27 00:28:41 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

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.


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