Summary

The function ``Swap::loadlacks validation for a zero address input, which could lead to unexpected behavior when the function is called with the address0x0` (the zero address).

Vulnerability Details

The Swap::load function is designed to load data associated with a specific account by computing a unique storage location using the account address. However, it does not include a check to ensure that the input address is not the zero address (0x0). Calling this function with a zero address could lead to unintended behavior, such as accessing or modifying incorrect storage locations, resulting in data corruption or failures in the contract.

Impact

Security Risk: Allowing the zero address to be used could expose the contract to attacks, as it may lead to unintentional changes in storage or improper function execution.
Unexpected Behavior: Operations on the zero address could cause unexpected or incorrect data handling, leading to potential contract vulnerabilities.
Data Corruption: Accessing the zero address might overwrite critical data in contract storage, causing data integrity issues.

Tools Used

Manual code inspection

Recommendations

Add a validation check at the beginning of the function to revert if the account address is the zero address:

This check would ensure that only valid addresses can be used to load data, preventing any accidental or malicious use of the zero address.