Unbounded argument iteration in parse_argv/parse_env

[rennergade]

src/wasmtime/crates/lind-multi-process/src/utils.rs:19-30, 44-58

parse_argv and parse_env loop without limits, potentially walking off the end of linear memory. Should cap at ARG_MAX or validate against memory bounds.

[qianxichen233]

same discussion for #1053