mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/aacdec_fixed: Check s for being too small
Fixes: runtime error: shift exponent -8 is negative Fixes: 2286/clusterfuzz-testcase-minimized-5711764169687040 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
parent
f670c13f13
commit
cf7edbd6c5
|
@ -181,14 +181,15 @@ static void subband_scale(int *dst, int *src, int scale, int offset, int len)
|
|||
out = (int)(((int64_t)src[i] * c) >> 32);
|
||||
dst[i] = ((int)(out+round) >> s) * ssign;
|
||||
}
|
||||
}
|
||||
else {
|
||||
} else if (s > -32) {
|
||||
s = s + 32;
|
||||
round = 1U << (s-1);
|
||||
for (i=0; i<len; i++) {
|
||||
out = (int)((int64_t)((int64_t)src[i] * c + round) >> s);
|
||||
dst[i] = out * (unsigned)ssign;
|
||||
}
|
||||
} else {
|
||||
av_log(NULL, AV_LOG_ERROR, "Overflow in subband_scale()\n");
|
||||
}
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in New Issue