CVE-2021-46664 Null dereference in n/a

Medium 5.5 Published 1 Feb 2022 Updated 4 Aug 2024

An attacker can cause a denial of service in MariaDB by triggering a null pointer dereference during specific aggregate query processing.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2021-46664?

CVE-2021-46664 is a medium-severity vulnerability in Fedoraproject Fedora, published on 1 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

MariaDB through 10.5.9 allows an application crash in sub_select_postjoin_aggr for a NULL value of aggr.

Weakness: CWE-476

Which versions are affected by CVE-2021-46664?

3 open source packages ship an affected version, including mariadb, mariadb-min and mysql-client. It affects 2 products.

Package	Affected	Fixed in
`mariadb` Bitnami	From `10.2.0`	`10.2.43, 10.3.34, 10.4.24, 10.5.15, 10.6.7, 10.7.3`
`mariadb-min` Bitnami	From `10.2.0`	`10.2.43, 10.3.34, 10.4.24, 10.5.15, 10.6.7, 10.7.3`
`mysql-client` Bitnami	From `10.2.0`	`10.2.43, 10.3.34, 10.4.24, 10.5.15, 10.6.7, 10.7.3`

Products include Fedoraproject Fedora, Mariadb Mariadb.

How do I fix CVE-2021-46664?

Upgrade mariadb to a fixed version for your release line: 10.2.43, 10.3.34, 10.4.24 or 10.5.15.

Is CVE-2021-46664 being exploited?

There is no known exploitation of CVE-2021-46664 in the wild and no public exploit code.

All Fedoraproject Fedora vulnerabilities

Sources

Also known as ALPINE-CVE-2021-46664, AZL-8408, BIT-mariadb-2021-46664, BIT-mariadb-min-2021-46664, BIT-mysql-client-2021-46664, DEBIAN-CVE-2021-46664 and 2 more.