Integer overflow leading to Heap buffer overflow in JBIG2Stream.cc in pdftocairo in Poppler allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted PDF document (CVE-2017-9776).
The function GfxImageColorMap::getGray in GfxState.cc in Poppler allows attackers to cause a denial of service (stack-based buffer over-read and application crash) via a crafted PDF document, related to missing color-map validation in ImageOutputDev.cc (CVE-2017-9865).