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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-18 17:26:09 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-24 02:41:22 +0200 |
| commit | 2ccc30217ace340b3cbbda2b771aa1e05110de30 (patch) | |
| tree | 154c8c97fb5a3e960c9508ae2993456d3157d43a | |
| parent | eb505747a7aa1deaccc34416e6f4d398de54cb53 (diff) | |
| download | ffmpeg-2ccc30217ace340b3cbbda2b771aa1e05110de30.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 2456d6c0d1..7e9130aa3b 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -480,7 +480,7 @@ 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) return AVERROR_INVALIDDATA; |