CVE-2026-112937filelock: ReadWriteLock on the hard-link route deletes any directory another user renames onto its .filelock-* link directory name

Beschreibung

filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, ReadWriteLock can remove a randomized .filelock-* private-hard-link directory during cleanup, allowing another local user with rename access in a non-sticky parent to observe a live name or forge a dead-owner sweep name and rename a sibling directory onto it for deletion. This issue is fixed in version 4.2.1.

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Referenzen und Patches

• https://github.com/tox-dev/filelock/security/advisories/GHSA-jqc4-5cvw-7w85 ExploitMitigationPatchVendor Advisory
• https://github.com/tox-dev/filelock/pull/834 Patch
• https://github.com/tox-dev/filelock/commit/5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d Patch
• https://github.com/tox-dev/filelock/releases/tag/4.2.1 Release Notes