core/vm: fix modexp gas calculation #32568
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| // Add the MSB position - 1 if expHead is non-zero | ||
| if bitLen := expHead.BitLen(); bitLen > 0 { | ||
| iterationCount += uint64(bitLen - 1) | ||
| count, carry := bits.Add64(iterationCount, uint64(bitLen-1), 0) |
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iterationCount = (expLen - 32) * multiplier also possible to overflow?
expLen can up to maxUint64?
rjl493456442
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Sep 10, 2025
Sahil-4555
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Oct 12, 2025
fixes a bug in the gas calculation found by oss-fuzz
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fixes a bug in the gas calculation found by oss-fuzz