DVDReadBytes(): Check that requested size fits in ssize_t

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
puellavulnerata · Sep 9, 2015 · 752bbae · 752bbae
1 parent 1d4a5ce
commit 752bbae
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/dvd_reader.c b/src/dvd_reader.c
@@ -1354,7 +1354,7 @@ ssize_t DVDReadBytes( dvd_file_t *dvd_file, void *data, size_t byte_size )
   int ret;
 
   /* Check arguments. */
-  if( dvd_file == NULL || data == NULL )
+  if( dvd_file == NULL || data == NULL || (ssize_t)byte_size < 0 )
     return -1;
 
   seek_sector = dvd_file->seek_pos / DVD_VIDEO_LB_LEN;