Fixes: Timeout
Fixes: 5487/clusterfuzz-testcase-4696837035393024

Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
 libavcodec/huffyuvdec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/huffyuvdec.c b/libavcodec/huffyuvdec.c
index 979c4b9d5c..66357bfb40 100644
--- a/libavcodec/huffyuvdec.c
+++ b/libavcodec/huffyuvdec.c
@@ -919,6 +919,9 @@ static int decode_frame(AVCodecContext *avctx, void *data, 
int *got_frame,
     AVFrame *const p = data;
     int table_size = 0, ret;
 
+    if (buf_size < (width * height + 7)/8)
+        return AVERROR_INVALIDDATA;
+
     av_fast_padded_malloc(&s->bitstream_buffer,
                    &s->bitstream_buffer_size,
                    buf_size);
-- 
2.16.1

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