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| author | Reimar Döffinger <Reimar.Doeffinger@gmx.de> | 2011-02-19 11:33:01 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-02-20 19:05:46 +0100 |
| commit | c614d32e228919155e764929fb9a4392a3f16e91 (patch) | |
| tree | d907ab2194ed3ab47653724e229f1ae6ef3b64a0 | |
| parent | 0cfcbf217f7db5156da0acfb114a98c135d9ebfd (diff) | |
| download | ffmpeg-c614d32e228919155e764929fb9a4392a3f16e91.tar.gz | |
Fix invalid reads in VC1 decoder
Patch discussed and taken from https://roundup.ffmpeg.org/issue2584
(cherry picked from commit 2bbec1eda46d907605772a8b6e8263caa4bc4c82)
| -rw-r--r-- | libavcodec/vc1dec.c | 2 |
1 files changed, 1 insertions, 1 deletions
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 { |