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Check for out of bound writes when building tree in bink decoder. 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Laurent Aimar 2011-09-27 01:02:17 +02:00 committed by Michael Niedermayer
parent 36bf135d4c
commit 254af56dd1
1 changed files with 1 additions and 1 deletions
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libavcodec/bink.c
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@ -247,7 +247,7 @@ static void read_tree(GetBitContext *gb, Tree *tree)
tree->syms[i] = get_bits(gb, 4); tree->syms[i] = get_bits(gb, 4);
tmp1[tree->syms[i]] = 1; tmp1[tree->syms[i]] = 1;
} }
for (i = 0; i < 16; i++) for (i = 0; i < 16 && len < 16 - 1; i++)
if (!tmp1[i]) if (!tmp1[i])
tree->syms[++len] = i; tree->syms[++len] = i;
} else { } else {