Bug 2553409 - CVE-2026-4360 python3.10: Python Tarfile: Unexpected file ownership when extracting hardlinks [fedora-all]
Summary: CVE-2026-4360 python3.10: Python Tarfile: Unexpected file ownership when extr...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: python3.10
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Python Maintainers
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["1be78cfa-e50e-4c50-9a7c-2...
Depends On:
Blocks: CVE-2026-4360
TreeView+ depends on / blocked
 
Reported: 2026-10-15 12:40 UTC by Avinash Hanwate
Modified: 2026-10-15 12:40 UTC (History)
7 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Avinash Hanwate 2026-10-15 12:40:56 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.

In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function.


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