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avcodec/clearvideo: Check remaining data in P frames

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Fixes: Timeout (19sec -> 419msec)
Fixes: 13411/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CLEARVIDEO_fuzzer-5733153811988480

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 41f93f941155f9f9dbb2d5e7f5d20b2238150836)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-03-08 01:42:06 +01:00
parent dbef08b60f
commit 7ce56329e7
1 changed files with 3 additions and 0 deletions
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3
libavcodec/clearvideo.c
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@ -555,6 +555,9 @@ static int clv_decode_frame(AVCodecContext *avctx, void *data,
} else {
int plane;
if (c->pmb_width * c->pmb_height > 8LL*(buf_size - bytestream2_tell(&gb)))
return AVERROR_INVALIDDATA;
if ((ret = ff_reget_buffer(avctx, c->pic)) < 0)
return ret;