diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-21 16:53:55 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-21 16:54:25 +0200 |
| commit | b5228e44c7f3a5eba537c8a39a45cfbf2961a28d (patch) | |
| tree | 903613f28169a4f63a15d94b2aad689708ed9dfa | |
| parent | efeb47fd5d5cbf980e52a6d5e741c3c74b94b5e2 (diff) | |
| download | ffmpeg-b5228e44c7f3a5eba537c8a39a45cfbf2961a28d.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>
| -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 b416cf1d25..7b5e40e484 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); |