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avcodec/aacdec_fixed: Fix multiple shift exponent 33 is too large for 32-bit type 'int'

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Fixes: 1471/clusterfuzz-testcase-minimized-6376460543590400

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 3a0ff78168)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-11 15:13:53 +02:00
parent 35f293fe89
commit 363b46cdbf
1 changed files with 5 additions and 1 deletions
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6
libavcodec/aacdec_fixed.c
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@ -171,7 +171,11 @@ static void subband_scale(int *dst, int *src, int scale, int offset, int len)
s = offset - (s >> 2);
if (s > 0) {
if (s > 31) {
for (i=0; i<len; i++) {
dst[i] = 0;
}
} else if (s > 0) {
round = 1 << (s-1);
for (i=0; i<len; i++) {
out = (int)(((int64_t)src[i] * c) >> 32);