[FFmpeg-cvslog] bink: Bound check the quantization matrix.

[Luca Barbato]

ffmpeg | branch: release/1.1 | Luca Barbato <lu_zero at gentoo.org> | Sun Aug  4 18:48:20 2013 +0200| [c5ba226c1b0b76c1e7fad17a1448b793240671f6] | committer: Luca Barbato

bink: Bound check the quantization matrix.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable at libav.org
(cherry picked from commit 9991298f2c4d9022ad56057f15d037e18d454157)
Signed-off-by: Luca Barbato <lu_zero at gentoo.org>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c5ba226c1b0b76c1e7fad17a1448b793240671f6
---

 libavcodec/bink.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/bink.c b/libavcodec/bink.c
index 059601d..c637f4e 100644
--- a/libavcodec/bink.c
+++ b/libavcodec/bink.c
@@ -677,6 +677,9 @@ 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;