Deadlock vulnerability in MariaDB's compress_write function

CVE-2022-38791 · MEDIUM Severity

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

In MariaDB before 10.9.2, compress_write in extra/mariabackup/ds_compress.cc does not release data_mutex upon a stream write failure, which allows local users to trigger a deadlock.

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