Integer signedness error in the fourxm_read_header function in libavformat/4xm.c in FFmpeg before revision 16846 allows remote attackers to execute arbitrary code via a malformed 4X movie file with a large current_track value, which triggers a NULL pointer dereference.
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00215.html
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00210.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/48330
http://www.vupen.com/english/advisories/2009/0277
http://www.ubuntu.com/usn/USN-734-1
http://www.trapkit.de/advisories/TKADV2009-004.txt
http://www.securityfocus.com/bid/33502
http://www.securityfocus.com/archive/1/500514/100/0/threaded
http://www.mandriva.com/security/advisories?name=MDVSA-2009:297
http://www.debian.org/security/2009/dsa-1782
http://www.debian.org/security/2009/dsa-1781
http://security.gentoo.org/glsa/glsa-200903-33.xml
http://secunia.com/advisories/34905
http://secunia.com/advisories/34845
http://secunia.com/advisories/34712
http://secunia.com/advisories/34385
http://secunia.com/advisories/34296
http://secunia.com/advisories/33711
http://git.ffmpeg.org/?p=ffmpeg%3Ba=commitdiff%3Bh=72e715fb798f2cb79fd24a6d2eaeafb7c6eeda17