In Poppler through 0.76.1, there is a heap-based buffer over-read in JPXStream::init in JPEG2000Stream.cc via data with inconsistent heights or widths.Referenceshttps://gitlab.freedesktop.org/poppler/poppler/issues/768http://www.securityfocus.com/bid/108457https://lists.debian.org/debian-lts-announce/2019/06/msg00002.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7MAWV24KRXTFODLVT46RXI27XIQFX2QR/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YWS7NVFFCUY3YSTMEKZEJEU6JVUUBKHB/https://usn.ubuntu.com/4042-1/https://access.redhat.com/errata/RHSA-2019:2713https://lists.debian.org/debian-lts-announce/2020/07/msg00018.html
