Google Chrome: Integer Overflow when Processing WebAssembly Locals(CVE-2018-6092)

When v8 decodes the locals of a function, it performs a check: if count + typelist-size kV8MaxWasmFunctionLocals decoder-errordecoder-pc - 1, "local count too large"; return false; On a 32-bit platform, this check can be bypassed due to an integer overflow. This allows the number of function loca...