typefind: bounds check windows ico detection

Fixes out of bounds read https://bugzilla.gnome.org/show_bug.cgi?id=774902
2016-11-23 21:27:55 +11:00 · 2016-11-23 21:27:55 +11:00 · 2fdccfd64f
commit 2fdccfd64f
parent c2dd0149c9
1 changed files with 2 additions and 0 deletions
--- a/gst/typefind/gsttypefindfunctions.c
+++ b/gst/typefind/gsttypefindfunctions.c
@ -5224,6 +5224,8 @@ windows_icon_typefind (GstTypeFind * find, gpointer user_data)
  gint32 size, offset;

  datalen = gst_type_find_get_length (find);
+  if (datalen < 18)
+    return;
  if ((data = gst_type_find_peek (find, 0, 6)) == NULL)
    return;