diff -up ghostscript-8.63/src/gdevpdtb.c.CVE-2008-6679 ghostscript-8.63/src/gdevpdtb.c
--- ghostscript-8.63/src/gdevpdtb.c.CVE-2008-6679	2008-04-04 09:53:57.000000000 +0100
+++ ghostscript-8.63/src/gdevpdtb.c	2009-04-15 16:43:11.000000000 +0100
@@ -133,7 +133,7 @@ pdf_base_font_alloc(gx_device_pdf *pdev,
 			&st_pdf_base_font, "pdf_base_font_alloc");
     const gs_font_name *pfname = &font->font_name;
     gs_const_string font_name;
-    char fnbuf[3 + sizeof(long) / 3 + 1]; /* .F#######\0 */
+    char fnbuf[2*sizeof(long) + 3]; /* .F########\0 */
     int code;
 
     if (pbfont == 0)