Multiple double free vulnerabilities in Free Lossless Audio Codec (FLAC) libFLAC before 1.2.1 allow user-assisted remote attackers to execute arbitrary code via malformed (1) Seektable values or (2) Seektable Data Offsets in a .FLAC file.
http://www.securitytracker.com/id?1018974
http://www.securityfocus.com/archive/1/483765/100/200/threaded
http://www.kb.cert.org/vuls/id/544656
http://securityreason.com/securityalert/3423
http://research.eeye.com/html/advisories/published/AD20071115.html