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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-10-27 02:23:20 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-10-30 21:32:26 +0100 |
| commit | 0976752420706c0a8b3cb8fd61497a47c7d7270f (patch) | |
| tree | b52b5342f0d262310f580a242607fa046e0fa215 | |
| parent | f1251a6b9ccaac8a38d24398bbff156bf786717c (diff) | |
| download | ffmpeg-0976752420706c0a8b3cb8fd61497a47c7d7270f.tar.gz | |
avcodec/aacdec_fixed: Fix integer overflow in predict()
Fixes: runtime error: signed integer overflow: -2110708110 + -82837504 cannot be represented in type 'int'
Fixes: 3547/clusterfuzz-testcase-minimized-6009386439802880
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/aacdec_fixed.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/aacdec_fixed.c b/libavcodec/aacdec_fixed.c index f6a533010f..5e9249ceea 100644 --- a/libavcodec/aacdec_fixed.c +++ b/libavcodec/aacdec_fixed.c @@ -307,9 +307,9 @@ static av_always_inline void predict(PredictorState *ps, int *coef, if (shift < 31) { if (shift > 0) { - *coef += (pv.mant + (1 << (shift - 1))) >> shift; + *coef += (unsigned)((pv.mant + (1 << (shift - 1))) >> shift); } else - *coef += pv.mant << -shift; + *coef += (unsigned)(pv.mant << -shift); } } |