CVE-2023-26489

Summary of CVE-2023-26489 (wasmtime/Cranelift): In x86_64, Cranelift’s address-mode computation could extend a 32-bit WebAssembly address to 64 bits, producing an effective address up to 35 bits away from linear memory. With default codegen, this allowed wasm-controlled loads/stores to read/write...

CVE-2023-27477

Wasmtime Cranelift on x86_64 has a codegen bug for i8x16.select that can yield incorrect results when the same operand is used and some selected indices exceed 16. The off-by-one error in the mask calculation for pshufb may cause wrong results when lanes are taken from the second vector. This iss...