commit cc7b4486cda098c4d4c580049e0cf8da4d952204
author Yaowu Xu <yaowu@yaowu-macbookpro.roam.corp.google.com> Wed Feb 28 07:03:01 2018 -0800
committer Yaowu Xu <yaowu@google.com> Wed Feb 28 17:42:04 2018 +0000
tree 3e6b5a434b5b943668adf3aa2bd9730ec6c1e77c
parent de69d8ef814561a1ae03bedc17a4f5df7af96b17

Add error detection before decoding tilegroup

BUG=aomedia:1454

Change-Id: I730bb8704db55deb05307a51a58e8b32d42a4976

av1/decoder/obu.c

diff --git a/av1/decoder/obu.c b/av1/decoder/obu.c
index f39f41e..264b95e 100644
--- a/av1/decoder/obu.c
+++ b/av1/decoder/obu.c
@@ -346,6 +346,10 @@
         if (cm->show_existing_frame) frame_decoding_finished = 1;
         break;
       case OBU_TILE_GROUP:
+        if (!frame_header_received) {
+          cm->error.error_code = AOM_CODEC_CORRUPT_FRAME;
+          return;
+        }
         obu_payload_size =
             read_one_tile_group_obu(pbi, &rb, is_first_tg_obu_received, data,
                                     data + obu_size - obu_header_size,