Stack-based buffer overflow in the ps_gettext function in ps.c for GNU gv 3.6.2 and possibly earlier versions allows user-assisted attackers to execute arbitrary code via a PostScript (PS) file with certain headers that contain long comments as demonstrated using the (1) DocumentMedia (2) DocumentPaperSizes and possibly (3) PageMedia and (4) PaperSize headers. NOTE: this issue can be exploited through other products that use gv such as evince.