mupdf - security update

A flaw was discovered in the pdf_load_mesh_params() function allowing
out-of-bounds write access to memory locations. With carefully crafted
input, that could trigger a heap overflow, resulting in application
crash or possibly having other unspecified impact.

For Debian 7 Wheezy, these problems have been fixed in version
0.9-2+deb7u3.

We recommend that you upgrade your mupdf packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: <https://wiki.debian.org/LTS&gt;