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From 0d93b03e6861fafd3eddd9ee164cf56630c9d899 Mon Sep 17 00:00:00 2001
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From: Laurent Aimar <fenrir@videolan.org>
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Date: Mon, 12 Sep 2011 23:49:36 +0200
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Subject: [PATCH 59/70] Check for invalid VLC value in smacker decoder.
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Signed-off-by: Martin Storsjö <martin@martin.st>
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(cherry picked from commit 6489455495fc5bfbebcfe3f57e5d4fdd6a781091)
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Signed-off-by: Anton Khirnov <anton@khirnov.net>
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libavcodec/smacker.c | 2 ++
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1 files changed, 2 insertions(+), 0 deletions(-)
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diff --git a/libavcodec/smacker.c b/libavcodec/smacker.c
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index e8de0d8..9628b07 100644
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--- a/libavcodec/smacker.c
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+++ b/libavcodec/smacker.c
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@@ -139,6 +139,8 @@ static int smacker_decode_bigtree(GetBitContext *gb, HuffContext *hc, DBCtx *ctx
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b2 = get_bits_count(gb);
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i2 = ctx->v2->table ? get_vlc2(gb, ctx->v2->table, SMKTREE_BITS, 3) : 0;
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b2 = get_bits_count(gb) - b2;
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+ if (i1 < 0 || i2 < 0)
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val = ctx->recode1[i1] | (ctx->recode2[i2] << 8);
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if(val == ctx->escapes[0]) {
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ctx->last[0] = hc->current;