From 2bbec1eda46d907605772a8b6e8263caa4bc4c82 Mon Sep 17 00:00:00 2001 From: Reimar Döffinger Date: Sat, 19 Feb 2011 11:33:01 +0100 Subject: Fix invalid reads in VC1 decoder Patch discussed and taken from https://roundup.ffmpeg.org/issue2584 --- libavcodec/vc1dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c index 6707cdec71..7eb9576c69 100644 --- a/libavcodec/vc1dec.c +++ b/libavcodec/vc1dec.c @@ -1376,7 +1376,7 @@ static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, if (index != vc1_ac_sizes[codingset] - 1) { run = vc1_index_decode_table[codingset][index][0]; level = vc1_index_decode_table[codingset][index][1]; - lst = index >= vc1_last_decode_table[codingset]; + lst = index >= vc1_last_decode_table[codingset] || get_bits_left(gb) < 0; if(get_bits1(gb)) level = -level; } else { -- cgit v1.2.3