--- XFree86-3.3.6/xc/programs/Xserver/xkb/ddxLoad.c.xkbstack	Sun Sep 27 09:21:29 1998
+++ XFree86-3.3.6/xc/programs/Xserver/xkb/ddxLoad.c	Thu May 25 12:31:34 2000
@@ -236,6 +236,13 @@
 	sprintf(keymap,"server-%s",display);
     }
     else {
+	if (strlen(names->keymap) > PATH_MAX - 1) {
+#ifdef DEBUG
+            ErrorF("name of keymap (%s) exceeds max length\n",
+							names->keymap);
+#endif
+	    return False;
+	}
 	strcpy(keymap,names->keymap);
     }