From: Ludovic Rousseau <rousseau@debian.org>
Date: Sat Sep  8 16:02:23 CEST 2018
Subject: Fix heap buffer overflow

--- a/jhead.c
+++ b/jhead.c
@@ -670,7 +670,7 @@
             NameExtra[0] = 0;
         }
 
-        sprintf(NewName, "%s%s.jpg", NewBaseName, NameExtra);
+        snprintf(NewName, sizeof(NewName), "%s%s.jpg", NewBaseName, NameExtra);
 
         if (!strcmp(FileName, NewName)) break; // Skip if its already this name.
 
