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avcodec/mpc8: check for overread earlier and abort decoding frame

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2018-03-30 12:32:00 +02:00
parent 11f8f9547d
commit cc40228255
1 changed files with 5 additions and 0 deletions
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5
libavcodec/mpc8.c
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@ -273,6 +273,11 @@ static int mpc8_decode_frame(AVCodecContext * avctx, void *data,
if(maxband > 32) maxband -= 33;
}
if (get_bits_left(gb) < 0) {
*got_frame_ptr = 0;
return buf_size;
}
if(maxband > c->maxbands + 1) {
av_log(avctx, AV_LOG_ERROR, "maxband %d too large\n",maxband);
return AVERROR_INVALIDDATA;