|Integer overflow in the ImageStream::ImageStream function in Stream.cc
in Xpdf before 3.02pl4 and Poppler before 0.12.1, as used in GPdf,
kdegraphics KPDF, and CUPS pdftops, allows remote attackers to cause a
denial of service (application crash) via a crafted PDF document that
triggers a NULL pointer dereference or buffer over-read.