Improper Resource Shutdown or Release
MariaDB Server before 10.7 is vulnerable to Denial of Service. In extra/mariabackup/ds_compress.cc, when an error occurs (pthread_create returns a nonzero value) while executing the method create_worker_threads, the held lock is not released correctly, which allows local users to trigger a denial of service due to the deadlock.
CWE-404 - Improper Resource Shutdown or Release
The program does not release or incorrectly releases a resource before it is made available for re-use.