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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-10-27 02:23:20 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-31 22:56:14 +0100 |
| commit | 9ef0472b265abd2aa38a33145e3a618307e05bb0 (patch) | |
| tree | 21fb87f3f8229d553b266c49e7626789fdadae96 | |
| parent | 9ba9c5a16f476e5b0d5f7570416d596d89d310c9 (diff) | |
| download | ffmpeg-9ef0472b265abd2aa38a33145e3a618307e05bb0.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>
(cherry picked from commit 0976752420706c0a8b3cb8fd61497a47c7d7270f)
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 8f2fcd214b..81dcafa7a9 100644 --- a/libavcodec/aacdec_fixed.c +++ b/libavcodec/aacdec_fixed.c @@ -306,9 +306,9 @@ 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); } } |