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bink: Bound check the quantization matrix.

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Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2013-08-04 18:48:20 +02:00
parent bb9378251a
commit 9991298f2c
1 changed files with 3 additions and 0 deletions
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3
libavcodec/bink.c
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@ -681,6 +681,9 @@ static int read_dct_coeffs(GetBitContext *gb, int32_t block[64], const uint8_t *
quant_idx = q;
}
if (quant_idx >= 16)
return AVERROR_INVALIDDATA;
quant = quant_matrices[quant_idx];
block[0] = (block[0] * quant[0]) >> 11;