[Secure-testing-team] Bug#845246: mat file out of bound

[Bastien ROUCARIES]

Package: src:imagemagick
version: 8:6.8.9.9-5+deb8u5
Severity: grave
Tags: patch security
X-Debbugs-CC: secure-testing-team at lists.alioth.debian.org
control: found -1 8:6.7.7.10-5+deb7u7
control: notfound -1 8:6.9.6.2+dfsg-2

moreinfo
https://bugs.launchpad.net/ubuntu/+source/imagemagick/+bug/1545366

https://github.com/ImageMagick/ImageMagick/issues/131
Fixed by;

https://github.com/ImageMagick/ImageMagick/commit/b173a352397877775c51c9a0e9d59eb6ce24c455
https://github.com/ImageMagick/ImageMagick/commit/f3b483e8b054c50149912523b4773687e18afe25