db2pd in the Problem Determination component in IBM DB2 9.1 before FP7 and 9.5 before FP5 allows attackers to cause a denial of service (NULL pointer dereference and application termination) via unspecified vectors.
http://www.vupen.com/english/advisories/2009/3520
http://www.securityfocus.com/bid/37332
http://www-01.ibm.com/support/docview.wss?uid=swg21412902
http://www-01.ibm.com/support/docview.wss?uid=swg21293566
http://www-01.ibm.com/support/docview.wss?uid=swg1IZ28510