MySQL Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability - CVE-2012-5612
Heap-based buffer overflow in Oracle MySQL 5.5.19 and other versions through 5.5.28 and MariaDB 5.5.28a and possibly other versions allows remote authenticated users to cause a denial of service (memory corruption and crash) and possibly execute arbitrary code as demonstrated using certain variations of the (1) USE (2) SHOW TABLES (3) DESCRIBE (4) SHOW FIELDS FROM (5) SHOW COLUMNS FROM (6) SHOW INDEX FROM (7) CREATE TABLE (8) DROP TABLE (9) ALTER TABLE (10) DELETE FROM (11) UPDATE and (12) SET PASSWORD commands.