[FFmpeg-devel] [PATCH] avformat/rawvideodec: check packet size

[Michael Niedermayer]

Fixes: division by zero
Fixes: 43347/clusterfuzz-testcase-minimized-ffmpeg_dem_V210X_fuzzer-5846911637127168

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavformat/rawvideodec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/rawvideodec.c b/libavformat/rawvideodec.c
index 68547fc50ff..7581ba2c7d2 100644
--- a/libavformat/rawvideodec.c
+++ b/libavformat/rawvideodec.c
@@ -100,6 +100,8 @@ static int rawvideo_read_header(AVFormatContext *ctx)
         if (packet_size < 0)
             return packet_size;
     }
+    if (packet_size == 0)
+        return AVERROR_INVALIDDATA;
 
     st->codecpar->format = pix_fmt;
     ctx->packet_size = packet_size;
-- 
2.17.1