GHSA-75jp-vq8x-h4cq Wasmi Out-of-bounds Write for host to Wasm calls with more than 128 Parameters

• crates.io wasmi: >= 0.15.0, < 0.31.1 → fixed in 0.31.1

Summary In the WASMI Interpreter, an Out-of-bounds Buffer Write will arise arise if the host calls or resumes a Wasm function with more parameters than the default limit (128), as it will surpass the stack value. This doesn’t affect calls from Wasm to Wasm, only from host to Wasm. Impact After conducting an analysis of the dependent Polkadot systems of `wasmi`: Pallet Contracts, Parity Signer, and Smoldot, we have found that none on those systems have been affected by the issue as they are calling host to Wasm function with a small limited amount of parameters always. Mitigations If you are using `wasmi` betwen version 0.15.0 and 0.31.0, please update it to the 0.31.1 patch release that we just published. Workarounds Ensure no more than 128 parameters can be pass in a call from the host to a Wasm function. References Patch PR: Special thanks Special thanks to Stellar Development Foundation for reporting this security vulnerability.