PDFDoc::markObject in PDFDoc.cc in Poppler 0.74.0 mishandles dict marking, leading to stack consumption in the function Dict::find() located at Dict.cc, which can (for example) be triggered by passing a crafted pdf file to the pdfunite binary.
https://usn.ubuntu.com/4042-1/
https://research.loginsoft.com/bugs/stack-based-buffer-overflows-in-dictfind-poppler-0-74-0/
https://lists.debian.org/debian-lts-announce/2022/09/msg00030.html
https://gitlab.freedesktop.org/poppler/poppler/issues/741