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ffmpeg.wasm-core
Commit 2bbec1ed authored by Reimar Döffinger's avatar Reimar Döffinger Committed by Reinhard Tartler
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Fix invalid reads in VC1 decoder 

Patch discussed and taken from https://roundup.ffmpeg.org/issue2584
parent a89f4ca0
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libavcodec/vc1dec.c
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......@@ -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 {
......
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