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avcodec/aacdec_fixed: Fix integer overflow in apply_dependent_coupling_fixed()
Fixes: runtime error: signed integer overflow: 623487 * 536870912 cannot be represented in type 'int' Fixes: 3594/clusterfuzz-testcase-minimized-4650622935629824 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 41d96af2a74cb5df50346b160067facd43149667) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -394,7 +394,7 @@ static void apply_dependent_coupling_fixed(AACContext *ac,
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for (k = offsets[i]; k < offsets[i + 1]; k++) {
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tmp = (int)(((int64_t)src[group * 128 + k] * c + \
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(int64_t)0x1000000000) >> 37);
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dest[group * 128 + k] += tmp * (1 << shift);
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dest[group * 128 + k] += tmp * (1U << shift);
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}
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}
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}
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