CVE-2026-112915filelock ReadWriteLock: a crafted lock database makes every acquire stall or hang regardless of timeout

Descripción

filelock is a platform-independent file lock for Python. From 3.20.4 until 4.2.1, ReadWriteLock can open a crafted SQLite lock database without bounding schema and query work, allowing another local user who can replace the database to make acquisition stall or hang; versions from 3.20.4 expose this on initial per-instance opening, and versions from 3.30.0 repeat the exposure on every acquisition. This issue is fixed in version 4.2.1.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/tox-dev/filelock/security/advisories/GHSA-cwqr-hh33-gh44 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