mupdf -- multiple vulnerabilities

Tobias Kortkamp reports:

Heap-based buffer overflow in the pdf_load_mesh_params
function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a
denial of service (crash) or execute arbitrary code via a large decode
array.
Use-after-free vulnerability in the pdf_load_xref function in
pdf/pdf-xref.c in MuPDF allows remote attackers to cause a denial of
service (crash) via a crafted PDF file.