Index: LibRaw-0.18.9/internal/dcraw_common.cpp
===================================================================
--- LibRaw-0.18.9.orig/internal/dcraw_common.cpp
+++ LibRaw-0.18.9/internal/dcraw_common.cpp
@@ -893,7 +893,7 @@ void CLASS lossless_jpeg_load_raw()
 #else
         longjmp (failure, 3);
 #endif
-      if ((unsigned) row < raw_height) RAW(row,col) = val;
+      if ((unsigned) row < raw_height && ((unsigned)col < raw_width)) RAW(row,col) = val;
       if (++col >= raw_width)
 	col = (row++,0);
     }