Commit 27505de3 authored by Michael Niedermayer's avatar Michael Niedermayer

avcodec/takdec: Fix integer overflow in decode_lpc()

Fixes: runtime error: signed integer overflow: 16748560 + 2143729712 cannot be represented in type 'int'
Fixes: 3202/clusterfuzz-testcase-minimized-4988291642294272

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: 's avatarMichael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 5d31f03a)
Signed-off-by: 's avatarMichael Niedermayer <michael@niedermayer.cc>
parent dc5240a4
......@@ -204,7 +204,7 @@ static void decode_lpc(int32_t *coeffs, int mode, int length)
int a1 = *coeffs++;
for (i = 0; i < length - 1 >> 1; i++) {
*coeffs += a1;
coeffs[1] += *coeffs;
coeffs[1] += (unsigned)*coeffs;
a1 = coeffs[1];
coeffs += 2;
}
......
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