CVE-2022-31623

Name: CVE-2022-31623
Creator: NVD / NIST
Published: 2022-05-25T21:15:08.657+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2022-31623 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.22%

12.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-667

Affected Software

Vendor	Product	Versions
Mariadb	Mariadb	< 10.2.42
Mariadb	Mariadb	>= 10.3.0, < 10.3.33
Mariadb	Mariadb	>= 10.4.0, < 10.4.23
Mariadb	Mariadb	>= 10.5.0, < 10.5.14
Mariadb	Mariadb	>= 10.6.0, < 10.6.6
Mariadb	Mariadb	>= 10.7.0, < 10.7.2

References

https://github.com/MariaDB/server/commit/7c30bc38a588b22b01f11130cfe99e7f36accf94Patch, Third Party Advisory
https://github.com/MariaDB/server/pull/1938Patch, Third Party Advisory
https://jira.mariadb.org/browse/MDEV-26561
https://jira.mariadb.org/browse/MDEV-26574
https://security.netapp.com/advisory/ntap-20220707-0006/Third Party Advisory
https://github.com/MariaDB/server/commit/7c30bc38a588b22b01f11130cfe99e7f36accf94Patch, Third Party Advisory
https://github.com/MariaDB/server/pull/1938Patch, Third Party Advisory
https://jira.mariadb.org/browse/MDEV-26561
https://jira.mariadb.org/browse/MDEV-26574
https://security.netapp.com/advisory/ntap-20220707-0006/Third Party Advisory

Timeline

Published: May 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-31623?

How severe is CVE-2022-31623?

CVE-2022-31623 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31623?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-31623?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST