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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-21 16:53:55 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-02 01:14:38 +0200 |
| commit | e73efe469112ade26f11f627053cbcec81fced0e (patch) | |
| tree | 30f33b2f45ca00f4ddf6ced28b7050035b9d844b | |
| parent | a7442f8d357d7a057c255fe9481fb1053b7a74bd (diff) | |
| download | ffmpeg-e73efe469112ade26f11f627053cbcec81fced0e.tar.gz | |
avcodec/aacdec_fixed: Fix runtime error: shift exponent 34 is too large for 32-bit type 'int'
Fixes: 1721/clusterfuzz-testcase-minimized-4719352135811072
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 b5228e44c7f3a5eba537c8a39a45cfbf2961a28d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/aacdec_fixed.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libavcodec/aacdec_fixed.c b/libavcodec/aacdec_fixed.c index 1b5e8aa326..33f959070c 100644 --- a/libavcodec/aacdec_fixed.c +++ b/libavcodec/aacdec_fixed.c @@ -207,7 +207,11 @@ static void noise_scale(int *coefs, int scale, int band_energy, int len) c /= band_energy; s = 21 + nlz - (s >> 2); - if (s > 0) { + if (s > 31) { + for (i=0; i<len; i++) { + coefs[i] = 0; + } + } else if (s > 0) { round = 1 << (s-1); for (i=0; i<len; i++) { out = (int)(((int64_t)coefs[i] * c) >> 32); |