@@ -1,5 +1,5 @@

 /*

- *  Copyright (C) 2014, 2017 Cisco and/or its affiliates. All rights reserved.

+ *  Copyright (C) 2014, 2017-2018 Cisco and/or its affiliates. All rights reserved.

  *

  *  Author: Shawn Webb

  *

@@ -590,7 +590,7 @@ char *pdf_parse_string(struct pdf_struct *pdf, struct pdf_obj *obj, const char *

     /* Make a best effort to find the end of the string and determine if UTF-* */

     p2 = ++p1;

-    checklen = cli_strnlen(p1, objsize - 1) + 1;

+    checklen = cli_strnlen(p1, objsize - (size_t)(p1 - oobj)) + 1;

     while (p2 < objstart + checklen) {

         int shouldbreak=0;