InnoDB: Security Fix: Issuing TRUNCATE TABLE and examining the same table's information in the INFORMATION_SCHEMA database at the same time could cause a crash in the debug version of the server. (Bug #54678)

Security Fix: In prepared-statement mode, EXPLAIN for a SELECT from a derived table caused a server crash. (Bug #54488)

Security Fix: EXPLAIN EXTENDED caused a server crash with some prepared statements. (Bug #54494)

Security Fix: The server crashed for assignment of values of types other than Geometry to items of type GeometryCollection (MultiPoint, MultiCurve, MultiSurface). Now the server checks the value type and fails with bad geometry value if it detects incorrect parameters. (Bug #55531)