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indeo4: Check the quantization matrix index
author
Luca Barbato
<lu_zero@gentoo.org>
Fri, 12 Jul 2013 13:02:33 +0000
(15:02 +0200)
committer
Luca Barbato
<lu_zero@gentoo.org>
Sat, 13 Jul 2013 17:11:18 +0000
(19:11 +0200)
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
libavcodec/indeo4.c
patch
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diff --git
a/libavcodec/indeo4.c
b/libavcodec/indeo4.c
index
e580074
..
f1ef02a
100644
(file)
--- a/
libavcodec/indeo4.c
+++ b/
libavcodec/indeo4.c
@@
-359,6
+359,11
@@
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n");
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 */