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indeo4: Check the quantization matrix index

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Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2013-07-12 15:02:33 +02:00
parent 8435bca087
commit 6255ccf7d5
1 changed files with 5 additions and 0 deletions
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5
libavcodec/indeo4.c
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@ -359,6 +359,11 @@ static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n"); av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n");
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
if (band->quant_mat >= FF_ARRAY_ELEMS(quant_index_to_tab)) {
avpriv_request_sample(avctx, "Quantization matrix %d",
band->quant_mat);
return AVERROR_INVALIDDATA;
}
} }
/* decode block huffman codebook */ /* decode block huffman codebook */