Several security issues have been corrected in multiple demuxers and decoders of the libav multimedia library. The IDs mentioned above are just a portion of the security issues fixed in this update. A full list of the changes is available at <http://git.libav.org/?p=libav.git;a=blob;f=Changelog;hb=refs/tags/v0.8.10>
For the stable distribution (wheezy), these problems have been fixed in version 6:0.8.10-1
For the unstable distribution (sid), these problems have been fixed in version 6:9.11-1.
We recommend that you upgrade your libav packages.