What’s Vulnerable › Vulnerabilities

CVE-2022-31622

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-25 · updated 2026-06-17
• Weakness: CWE-667

Description

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. Note: The vendor argues this is just an improper locking bug and not a vulnerability with adverse effects.

Affected products

• MariaDB: before 10.2.42; from 10.3.0 before 10.3.33; from 10.4.0 before 10.4.23; from 10.5.0 before 10.5.14; from 10.6.0 before 10.6.6; from 10.7.0 before 10.7.2 — fixed in 10.2.42, 10.3.33, 10.4.23, 10.5.14, 10.6.6, 10.7.2

How to fix

Upgrade to a fixed version: MariaDB 10.2.42, 10.3.33, 10.4.23, 10.5.14. Check the vendor advisory for mitigations.

References

• https://github.com/MariaDB/server/commit/e1eb39a446c30b8459c39fd7f2ee1c55a36e97d2
• https://jira.mariadb.org/browse/MDEV-26561
• https://jira.mariadb.org/browse/MDEV-26561?filter=-2
• https://jira.mariadb.org/browse/MDEV-26574
• https://security.netapp.com/advisory/ntap-20220707-0006/
• https://github.com/MariaDB/server/commit/e1eb39a446c30b8459c39fd7f2ee1c55a36e97d2
• https://jira.mariadb.org/browse/MDEV-26561
• https://jira.mariadb.org/browse/MDEV-26561?filter=-2
• https://jira.mariadb.org/browse/MDEV-26574
• https://security.netapp.com/advisory/ntap-20220707-0006/

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