CVE-2022-31624

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. While executing the plugin/server_audit/server_audit.c method log_statement_ex, the held lock lock_bigbuffer is not released correctly, which allows local users to trigger a denial of service due to the deadlock.

Affected products

MariaDB: before 10.2.41; from 10.3.0 before 10.3.32; from 10.4.0 before 10.4.22; from 10.5.0 before 10.5.13; from 10.6.0 before 10.6.5 — fixed in 10.2.41, 10.3.32, 10.4.22, 10.5.13, 10.6.5

How to fix

Upgrade to a fixed version: MariaDB 10.2.41, 10.3.32, 10.4.22, 10.5.13. Check the vendor advisory for mitigations.

References

https://github.com/MariaDB/server/commit/d627d00b13ab2f2c0954ea7b77202470cb102944
https://jira.mariadb.org/browse/MDEV-26556?filter=-2
https://security.netapp.com/advisory/ntap-20220707-0006/
https://github.com/MariaDB/server/commit/d627d00b13ab2f2c0954ea7b77202470cb102944
https://jira.mariadb.org/browse/MDEV-26556?filter=-2
https://security.netapp.com/advisory/ntap-20220707-0006/

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