The PostScriptFunction::PostScriptFunction function in poppler/Function.cc in the PDF parser in poppler 0.8.7 and possibly other versions up to 0.15.1, and possibly other products, allows context-dependent attackers to cause a denial of service (crash) via a PDF file that triggers an uninitialized pointer dereference.
https://bugzilla.redhat.com/show_bug.cgi?id=639356
http://www.ubuntu.com/usn/USN-1005-1
http://www.redhat.com/support/errata/RHSA-2010-0859.html
http://www.openwall.com/lists/oss-security/2010/10/04/6
http://www.mandriva.com/security/advisories?name=MDVSA-2010:231
http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.571720
http://secunia.com/advisories/42357
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-October/049545.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-October/049523.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-October/049392.html
http://cgit.freedesktop.org/poppler/poppler/commit/?id=bf2055088a3a2d3bb3d3c37d464954ec1a25771f