Use-after-free vulnerability in the matroska_read_seek function in libavformat/matroskadec.c in FFmpeg before 2.5.1, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted Matroska file that triggers improper maintenance of tracks data.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-7933
• https://code.google.com/p/chromium/issues/detail?id=427266
• http://git.videolan.org/?p=ffmpeg.git;a=commit;h=490a3ebf36821b81f73e34ad3f554cb523dd2682
• http://googlechromereleases.blogspot.com/2015/01/stable-update.html
• http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00005.html
• http://rhn.redhat.com/errata/RHSA-2015-0093.html
• http://secunia.com/advisories/62383
• http://secunia.com/advisories/62575
• http://secunia.com/advisories/62665
• http://security.gentoo.org/glsa/glsa-201502-13.xml
• http://www.securityfocus.com/bid/72288
• http://www.securitytracker.com/id/1031623
• http://www.ubuntu.com/usn/USN-2476-1
• http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=490a3ebf36821b81f73e34ad3f554cb523dd2682