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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-18 17:26:09 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-10-26 17:34:42 +0200 |
| commit | 6d1ebb9def18ee95f08fa63428d31b9742809e21 (patch) | |
| tree | 7cc1ad57663ce1fba0555e48e258b064cfe5cff8 | |
| parent | 4e341bd90411b98f395ea9744e90e00765f04e2b (diff) | |
| download | ffmpeg-6d1ebb9def18ee95f08fa63428d31b9742809e21.tar.gz | |
avcodec/ffv1dec: Fix integer overflow in read_quant_table()
Fixes: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 3361/clusterfuzz-testcase-minimized-5065842955911168
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d00fc952b6c261dd8eb0f7552b9ccf985dbc2b20)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ffv1dec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index 20921c6adf..8a0a82e62b 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -354,7 +354,7 @@ static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale) memset(state, 128, sizeof(state)); for (v = 0; i < 128; v++) { - unsigned len = get_symbol(c, state, 0) + 1; + unsigned len = get_symbol(c, state, 0) + 1U; if (len > 128 - i || !len) return AVERROR_INVALIDDATA; |