mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/g723_1dec: Fix runtime error: left shift of negative value -1
Fixes: 1504/clusterfuzz-testcase-minimized-6249212138225664 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -695,13 +695,13 @@ static int estimate_sid_gain(G723_1_Context *p)
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if (y <= 0) {
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if (y <= 0) {
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t = seg * 32 + (val + 1 << seg2);
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t = seg * 32 + (val + 1 << seg2);
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t = t * t - x;
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t = t * t - x;
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val = (seg2 - 1 << 4) + val;
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val = (seg2 - 1) * 16 + val;
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if (t >= y)
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if (t >= y)
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val++;
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val++;
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} else {
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} else {
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t = seg * 32 + (val - 1 << seg2);
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t = seg * 32 + (val - 1 << seg2);
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t = t * t - x;
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t = t * t - x;
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val = (seg2 - 1 << 4) + val;
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val = (seg2 - 1) * 16 + val;
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if (t >= y)
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if (t >= y)
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val--;
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val--;
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}
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}
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