Heap-based buffer overflow in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.5, Mac RealPlayer 11.0 through 12.0.0.1444, and Linux RealPlayer 11.0.2.1744 allows remote attackers to execute arbitrary code by specifying many subbands in cook audio codec information in a Real Audio file.
http://www.zerodayinitiative.com/advisories/ZDI-10-272
http://www.securitytracker.com/id?1024861
http://service.real.com/realplayer/security/12102010_player/en/