mupdf - security update

Two vulnerabilities were discovered in MuPDF, a lightweight PDF viewer.
The Common Vulnerabilities and Exposures project identifies the
following problems:

• CVE-2016-6265
  Marco Grassi discovered a use-after-free vulnerability in MuPDF. An
  attacker can take advantage of this flaw to cause an application
  crash (denial-of-service), or potentially to execute arbitrary code
  with the privileges of the user running MuPDF, if a specially
  crafted PDF file is processed.
• CVE-2016-6525
  Yu Hong and Zheng Jihong discovered a heap overflow vulnerability
  within the pdf_load_mesh_params function, allowing an attacker to
  cause an application crash (denial-of-service), or potentially to
  execute arbitrary code with the privileges of the user running
  MuPDF, if a specially crafted PDF file is processed.

For the stable distribution (jessie), these problems have been fixed in
version 1.5-1+deb8u1.

We recommend that you upgrade your mupdf packages.