Reentrancy guard on external-calling functions

Evidence summary #

EVM reentrancy via callback does not apply to Solana. Solana runtime prevents recursive CPIs into the same program within a single instruction. Factor N/A for Solana substrate.

Detail #

Solana's runtime enforces that a program cannot be re-entered via CPI within the same instruction. The nonReentrant guard pattern is EVM-specific and has no direct Solana equivalent needed.

Methodology #

Determine whether all state-mutating functions that perform external calls carry `nonReentrant` or an equivalent reentrancy guard.

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