NULL pointer dereference in MariaDB - CVE-2021-46664

Vulnerability identifier: #VU63717

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2021-46664

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

Affected software:
MariaDB
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
rh-mariadb103-mariadb (Red Hat package)
rh-mariadb103-galera (Red Hat package)
mysql-selinux (Red Hat package)
Judy-devel
Judy
asio-devel
mariadb-client
mariadb-errormessages
mariadb-tools-debuginfo
mariadb-tools
mariadb-debugsource
libmysqld-devel
libmysqld19
libmysqld19-debuginfo
mariadb
mariadb-client-debuginfo
mariadb-debuginfo
mariadb-server (Ubuntu package)
mariadb-oqgraph-engine
mariadb-embedded-devel
mariadb-backup
mariadb-common
mariadb-server
mariadb-server-galera
mariadb-gssapi-server
mariadb-errmessage
mariadb-test
mariadb-embedded
mariadb-devel
mariadb-cracklib
mariadb-errmsg
mariadb-server-utils
libmariadbd-devel
libmariadbd19
libmariadbd19-debuginfo
mariadb-galera
mariadb105
rh-mariadb105-mariadb (Red Hat package)
mariadb (Red Hat package)
mariadb-pam
mariadb-bench
mariadb-test-debuginfo
mariadb-rpm-macros
mariadb-bench-debuginfo
galera
rh-mariadb105-galera (Red Hat package)
galera (Red Hat package)
Gentoo Linux
Amazon Linux AMI
SUSE CaaS Platform
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Enterprise Storage
Anolis OS
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Slackware Linux
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Realtime Extension
SUSE Linux Enterprise Server for SAP Applications
SUSE Linux Enterprise Module for Server Applications
openSUSE Leap
openEuler
Ubuntu
Fedora
Red Hat Software Collections

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the sub_select_postjoin_aggr() function. A remote user can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://jira.mariadb.org/browse/MDEV-25761
• https://security.netapp.com/advisory/ntap-20220221-0002
• https://bugzilla.redhat.com/show_bug.cgi?id=2050024