[truetype] Minor update to forthcoming OpenType 1.8.4 standard.

* src/truetype/ttgxvar.c (ft_var_load_item_variation_store): Limit
size of `regionCount`.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/truetype/ttgxvar.c b/src/truetype/ttgxvar.c
index b462263de..53b0cc26f 100644
--- a/src/truetype/ttgxvar.c
+++ b/src/truetype/ttgxvar.c
@@ -493,6 +493,15 @@
       goto Exit;
     }
 
+    /* new constraint in OpenType 1.8.4 */
+    if ( itemStore->regionCount >= 32768U )
+    {
+      FT_TRACE2(( "ft_var_load_item_variation_store:"
+                  " too many variation region tables\n" ));
+      error = FT_THROW( Invalid_Table );
+      goto Exit;
+    }
+
     if ( FT_NEW_ARRAY( itemStore->varRegionList, itemStore->regionCount ) )
       goto Exit;