A floating point exception (divide-by-zero) vulnerability was discovered in Artifex MuPDF 1.23.4 in function pnm_binary_read_image() of load-pnm.c when span equals zero.Referenceshttps://github.com/dongyuma/sox-defects/blob/main/mupdf-defects.mdhttp://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=0c06a4e51519515615f6ab2d5b1f25da6771e1f4https://bugs.ghostscript.com/show_bug.cgi?id=707621
