reentrancy-pattern-analysis

Detect reentrancy vulnerabilities by analyzing Solidity code to map external calls to state changes, verifying Checks-Effects-Interactions pattern compliance, and tracing callback vectors through ERC-777 and ERC-1155 hooks.

Cross-function and cross-contract reentrancy occur when external calls trigger state modifications across multiple functions or protocols. Auditing builds call graphs to trace these state changes relative to external calls in multi-contract architectures.

Check Checks-Effects-Interactions pattern compliance by tracing state changes relative to external calls within the smart contract. The analysis verifies that all state modifications occur before external interactions to prevent reentrancy exploits.

ERC-777 and ERC-1155 transfers trigger reentrancy risks through callback hooks. Smart contract auditing identifies these callback vectors by mapping external token transfers to subsequent state changes and verifying protection mechanisms.

The best way to audit DeFi protocols for read-only reentrancy is systematically detecting all vulnerability variants by building call graphs and tracing state changes relative to external calls across the entire multi-contract architecture.

Traditional vulnerability detection misses subtle reentrancy risks because it often fails to map external calls to state changes across complex multi-contract architectures or identify callback vectors enabled by ERC-777 and ERC-1155 token standards.