An out-of-bounds read flaw was found in the Poppler library as demonstrated by pdfunite. This may result in a denial of service or other undefined behavior. This flaw may be exploitable when a victim opens a specially crafted PDF file.
Upstream Patch: https://cgit.freedesktop.org/poppler/poppler/commit/?id=004e3c10df0abda214f0c293f9e269fdd979c5ee