avcodec/libvpxdec: make sure BlockAdditional side data size >= 8

Signed-off-by: Marton Balint <cus@passwd.hu> Signed-off-by: James Zern <jzern@google.com>
5 years ago · 99e0007046
parent 6b54477072
commit 99e0007046
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/libvpxdec.c
+++ b/libavcodec/libvpxdec.c
@ -191,7 +191,7 @@ static int vpx_decode(AVCodecContext *avctx,
    side_data = av_packet_get_side_data(avpkt,
                                        AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
                                        &side_data_size);
-    if (side_data_size > 1) {
+    if (side_data_size >= 8) {
        const uint64_t additional_id = AV_RB64(side_data);
        side_data += 8;
        side_data_size -= 8;