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CVE-2022-31623: MDEV-26561 Fix a bug due to unreleased lock by ryancaicse · Pull Request #1938 · MariaDB/server

MariaDB Server before 10.7 is vulnerable to Denial of Service. In extra/mariabackup/ds_compress.cc, when an error occurs (i.e., going to the err label) while executing the method create_worker_threads, the held lock thd->ctrl_mutex is not released correctly, which allows local users to trigger a denial of service due to the deadlock.

CVE
#dos#jira

Fix a bug of unreleased lock ctrl_mutex in the method create_worker_threads

  • The Jira issue number for this PR is: MDEV-18187

Description

TODO: https://jira.mariadb.org/browse/MDEV-26561?filter=-2

Basing the PR against the correct MariaDB version

  • This is a new feature and the PR is based against the latest MariaDB development branch
  • This is a bug fix and the PR is based against the earliest branch in which the bug can be reproduced

Backward compatibility

TODO: fill details here, if applicable, or remove the section

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