libmariadb/mariadb_lib.c in MariaDB Connector/C before 3.1.8 does not properly validate the content of an OK packet received from a server. NOTE: although mariadb_lib.c was originally based on code shipped for MySQL, this issue does not affect any MySQL components supported by Oracle.
https://github.com/mariadb-corporation/mariadb-connector-c/compare/v3.1.7...v3.1.8
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00054.html
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00064.html