CVE-2022-31623

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.

How to fix CVE-2022-31623

To remediate CVE-2022-31623, upgrade the affected package to a fixed version below.

—upgrade to 10.6.7-r0 or later
—upgrade to 10.2.42 or later
—upgrade to 10.2.42 or later
—upgrade to 10.2.42 or later
—upgrade to 1:10.5.15-0+deb11u1 or later

Is CVE-2022-31623 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

from 0, < 10.6.7-r0
from 0, < 10.2.42, >= 10.3.0, < 10.3.33, >= 10.4.0, < 10.4.23, >= 10.5.0, < 10.5.14, >= 10.6.0, < 10.6.6, >= 10.7.0, < 10.7.2
from 0, < 10.2.42, >= 10.3.0, < 10.3.33, >= 10.4.0, < 10.4.23, >= 10.5.0, < 10.5.14, >= 10.6.0, < 10.6.6, >= 10.7.0, < 10.7.2
from 0, < 10.2.42, >= 10.3.0, < 10.3.33, >= 10.4.0, < 10.4.23, >= 10.5.0, < 10.5.14, >= 10.6.0, < 10.6.6, >= 10.7.0, < 10.7.2
from 0, < 1:10.5.15-0+deb11u1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H