MySQL: mysqld DoS (assertion failure) by alternate reads from two indexes on a table using the HANDLER interface (MySQL bug #54007)

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...