Submission Details
Severity:
`_calculateInterest()` precision loss in `Lender.sol`
Summary
_calculateInterest() calculations have precision loss
Vulnerability Details
Notice that interest is set to a value of (l.interestRate * l.debt * timeElapsed) / 10000 / 365 days, and fees is set to a value of (lenderFee * interest) / 10000. Because division occurs before multiplication in the fees calculation, there may be precision loss.
Impact
Small amount of precision loss in interest calculation. User funds are likely not at risk.
Tools Used
Recommendations
Change the fees calculation to (lenderFee * l.interestRate * l.debt * timeElapsed) / 10000 / 10000 / 365 days.
Prize pool breakdown
Total prize
20,000 USDC
nSLOC
70628
USDC / LOC
18,000 USDC
2,000 USDC
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