Oracle MySQL 5.1 before 5.1.49 and 5.0 before 5.0.92 allows remote authenticated users to cause a denial of service (mysqld daemon crash) by using EXPLAIN with crafted "SELECT ... UNION ... ORDER BY (SELECT ... WHERE ...)" statements, which triggers a NULL pointer dereference in the Item_singlerow_subselect::store function.

storage/innobase/dict/dict0crea.c in mysqld in Oracle MySQL 5.1 before 5.1.49 allows remote authenticated users to cause a denial of service (assertion failure) by modifying the (1) innodb_file_format or (2) innodb_file_per_table configuration parameters for the InnoDB storage engine, then executing a DDL statement.

Oracle MySQL 5.1 before 5.1.49 allows remote authenticated users to cause a denial of service (crash) via (1) IN or (2) CASE operations with NULL arguments that are explicitly specified or indirectly provided by the WITH ROLLUP modifier.

Oracle MySQL 5.1 before 5.1.49 and 5.5 before 5.5.5 allows remote authenticated users to cause a denial of service (mysqld daemon crash) by using the HANDLER interface and performing "alternate reads from two indexes on a table," which triggers an assertion failure.

Buffer overflow in MySQL 5.0 through 5.0.91 and 5.1 before 5.1.47 allows remote authenticated users to execute arbitrary code via a COM_FIELD_LIST command with a long table name.

Directory traversal vulnerability in MySQL 5.0 through 5.0.91 and 5.1 before 5.1.47 allows remote authenticated users to bypass intended table grants to read field definitions of arbitrary tables, and on 5.1 to read or delete content of arbitrary tables, via a .. (dot dot) in a table name.

The my_net_skip_rest function in sql/net_serv.cc in MySQL 5.0 through 5.0.91 and 5.1 before 5.1.47 allows remote attackers to cause a denial of service (CPU and bandwidth consumption) by sending a large number of packets that exceed the maximum length.

MySQL before 5.1.46 allows local users to delete the data and index files of another user's MyISAM table via a symlink attack in conjunction with the DROP TABLE command, a different vulnerability than CVE-2008-4098 and CVE-2008-7247.