Submission Details
Severity:
wrong arithmetic in calculating `center` in `TempleGoldStaking.sol`
Summary
while calculating prior votes using the function getPriorVotes() the arithmetic used to calculate the center is
uint256 center = upper - (upper - lower) / 2;
this is wrong so lets assume there are couple of checkpoints
lets say 10 checkPoints
. so the formula calculates center by
10 - (10 - 0) / 2 = 0.
. this is wrong cause the center should be 5.
Vulnerability Details
The votes that will always be returned will be at checkpoint[0]
Impact
misinformation of total votes
Tools Used
manual review
Recommendations
change the arithmetic form this
- uint256 center = upper - (upper - lower) / 2;
+ uint256 center = (upper + lower) / 2;
Prize pool breakdown
Total prize
25,000 USDC
nSLOC
99825 USDC / LOC
20,000 USDC
2,500 USDC
2,500 USDC
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