ghostscript: Stack-based out-of-bounds write in pdf_set_text_matrix function in gdevpdts.c

The settextdistance function in devices/vector/gdevpdts.c in the pdfwrite component in Artifex Ghostscript through 9.22 does not prevent overflows in text-positioning calculation, which allows remote attackers to cause a denial of service application crash or possibly have unspecified other impac...