bink: Bound check the quantization matrix.
authorLuca Barbato <lu_zero@gentoo.org>
Sun, 4 Aug 2013 16:48:20 +0000 (18:48 +0200)
committerLuca Barbato <lu_zero@gentoo.org>
Mon, 5 Aug 2013 14:24:13 +0000 (16:24 +0200)
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
libavcodec/bink.c

index 7ec0cab..98a54c6 100644 (file)
@@ -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;