Poppler before 0.66.0 has an integer overflow in Parser::makeStream in Parser.cc.
https://lists.debian.org/debian-lts-announce/2020/07/msg00018.html
https://lists.debian.org/debian-lts-announce/2019/09/msg00033.html
https://gitlab.freedesktop.org/poppler/poppler/commit/0868c499a9f5f37f8df5c9fef03c37496b40fc8a