GHSA-JQC4-5CVW-7W85 filelock: ReadWriteLock on the hard-link route deletes any directory another user renames onto its .filelock-* link directory name

ReadWriteLock and AsyncReadWriteLock the SQLite-backed reader/writer lock remove their private .filelock- link directories with shutil.rmtree a recursive delete on a remembered path. They do not check that the path still names the directory they created. This happens on the hard-link route a hard...