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avcodec/sbrdsp_fixed: Fix negation overflow in sbr_neg_odd_64_c() 

Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself
Fixes: 35593/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_FIXED_fuzzer-5182217725804544

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 8f2856a1da)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-07-30 23:04:08 +02:00
parent f32abd61b9
commit 8c9f389083
1 changed files with 1 additions and 1 deletions
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libavcodec/sbrdsp_fixed.c
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@ -87,7 +87,7 @@ static void sbr_neg_odd_64_c(int *x)
{ {
int i; int i;
for (i = 1; i < 64; i += 2) for (i = 1; i < 64; i += 2)
x[i] = -x[i]; x[i] = -(unsigned)x[i];
} }
static void sbr_qmf_pre_shuffle_c(int *z) static void sbr_qmf_pre_shuffle_c(int *z)