Summary

The additional check you added to the staleCheckLatestRoundData function checks if the updatedAt variable is equal to 0 or if the answeredInRound variable is less than the roundId variable. If either of these conditions is true, the function will revert with the OracleLib__StalePrice error..

Vulnerability Details

In libraries/OracleLib.sol =>
Add below code, to do staleCheckLatestRoundData =>
if (updatedAt == 0 || answeredInRound < roundId) {
revert OracleLib__StalePrice();
}

Impact

This means that if the data from the Chainlink Oracle is not up-to-date or if the latest round of data has not been answered yet, the function will revert and prevent further execution.

Tools Used

Manual Review

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