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avcodec/mpeg12dec: Check for overread in mpeg_decode_slice()

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This is needed in case the checked bitstream reader is disabled

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-24 17:45:26 +01:00
parent d82eccea2b
commit 76b5e99ce9
1 changed files with 2 additions and 0 deletions
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2
libavcodec/mpeg12dec.c
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@ -1846,6 +1846,8 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
}
}
eos: // end of slice
if (get_bits_left(&s->gb) < 0)
return AVERROR_INVALIDDATA;
*buf += (get_bits_count(&s->gb)-1)/8;
av_dlog(s, "y %d %d %d %d\n", s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y);
return 0;