[FFmpeg-cvslog] indeo4: Check the quantization matrix index
Luca Barbato
git at videolan.org
Sun Jul 14 12:48:43 CEST 2013
ffmpeg | branch: master | Luca Barbato <lu_zero at gentoo.org> | Fri Jul 12 15:02:33 2013 +0200| [6255ccf7d51c82ab79bf0cd47a921f572dda4489] | committer: Luca Barbato
indeo4: Check the quantization matrix index
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable at libav.org
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6255ccf7d51c82ab79bf0cd47a921f572dda4489
---
libavcodec/indeo4.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavcodec/indeo4.c b/libavcodec/indeo4.c
index e580074..f1ef02a 100644
--- 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 */
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