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avcodec/bethsoftvideo: Check block_type

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Fixes: Timeout (17 seconds -> 1 second)
Fixes: 13184/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BETHSOFTVID_fuzzer-5711446296494080

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b8ecadec0582a1521b5d0d253376966138e6ca78)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-02-24 23:39:44 +01:00
parent 4797b6092d
commit 1ca27e5215
1 changed files with 5 additions and 0 deletions
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5
libavcodec/bethsoftvideo.c
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@ -109,6 +109,11 @@ static int bethsoftvid_decode_frame(AVCodecContext *avctx,
if(yoffset >= avctx->height)
return AVERROR_INVALIDDATA;
dst += vid->frame->linesize[0] * yoffset;
case VIDEO_P_FRAME:
case VIDEO_I_FRAME:
break;
default:
return AVERROR_INVALIDDATA;
}
// main code