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CVE-2022-31623

Date: May 24, 2022

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.

Language: C++

Severity Score

Related Resources (10)

https://jira.mariadb.org/browse/MDEV-26561
https://access.redhat.com/security/cve/CVE-2022-31623
https://github.com/MariaDB/server/commit/7c30bc38a588b22b01f11130cfe99e7f36accf94
https://security.netapp.com/advisory/ntap-20220707-0006/
https://security-tracker.debian.org/tracker/CVE-2022-31623
https://nvd.nist.gov/vuln/detail/CVE-2022-31623
https://security.alpinelinux.org/vuln/CVE-2022-31623
https://github.com/MariaDB/server/pull/1938
https://jira.mariadb.org/browse/MDEV-26574
https://www.mend.io/vulnerability-database/CVE-2022-31623

Severity Score

Weakness Type (CWE)

Improper Locking

CWE-667

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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