Array index error in RealNetworks RealPlayer 11.0 through 11.1 and RealPlayer SP 1.0 through 1.0.1 allows remote attackers to execute arbitrary code via malformed sample data in a RealMedia .IVR file, related to a "malformed IVR pointer index" issue.
http://www.zerodayinitiative.com/advisories/ZDI-10-209/
http://www.securityfocus.com/bid/44144
http://service.real.com/realplayer/security/10152010_player/en/