Artifex MuPDF 1.14.0 has a SEGV in the function fz_load_page of the fitz/document.c file, as demonstrated by mutool. This is related to page-number mishandling in cbz/mucbz.c, cbz/muimg.c, and svg/svg-doc.c.
www.securityfocus.com/bid/106558
bugs.ghostscript.com/show_bug.cgi?id=700446
lists.debian.org/debian-lts-announce/2019/06/msg00027.html
lists.debian.org/debian-lts-announce/2020/07/msg00019.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNJNEX5EW6YH5OARXXSSXW4HHC5PIBSY/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SEK2EHVNREJ7XZMFF2MXRWKIF4IBHPNE/