From ab25b6aee6295b6fb77c076c85c89df9f2af08e7 Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Date: Thu, 28 May 2020 16:57:06 +0200
Subject: [PATCH] avcodec/vp9_raw_reorder_bsf: Check for existence of data
 before reading it

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/vp9_raw_reorder_bsf.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/vp9_raw_reorder_bsf.c b/libavcodec/vp9_raw_reorder_bsf.c
index f98752c775..e7d301cb85 100644
--- a/libavcodec/vp9_raw_reorder_bsf.c
+++ b/libavcodec/vp9_raw_reorder_bsf.c
@@ -292,6 +292,11 @@ static int vp9_raw_reorder_filter(AVBSFContext *bsf, AVPacket *out)
             return err;
         }
 
+        if (!in->size) {
+            av_packet_free(&in);
+            return AVERROR_INVALIDDATA;
+        }
+
         if ((in->data[in->size - 1] & 0xe0) == 0xc0) {
             av_log(bsf, AV_LOG_ERROR, "Input in superframes is not "
                    "supported.\n");