Heap-based buffer overflow in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.5, and Linux RealPlayer 11.0.2.1744 allows remote attackers to execute arbitrary code via a crafted conditional component in AAC frame data.
http://www.zerodayinitiative.com/advisories/ZDI-10-267
http://www.securitytracker.com/id?1024861
http://service.real.com/realplayer/security/12102010_player/en/