Add process hardening: core dumps, mlock, memfd#44
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- enclaveapp_core::process: harden_process() disables core dumps via setrlimit; mlock_buffer/munlock_buffer for secret memory pages - Launcher: mlock env_override values before spawn, zeroize and munlock after child exits - temp_config: add create_memfd_config() for Linux anonymous memory files (no filesystem path, eliminates same-user temp file read attack)
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This was referenced Apr 16, 2026
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Summary
enclaveapp_core::processmodule:harden_process()disables core dumps viasetrlimit(RLIMIT_CORE, 0)on Unix;mlock_buffer()/munlock_buffer()lock secret memory pages to prevent swap pagingcreate_memfd_config()(Linux): usesmemfd_createto create anonymous in-memory config files with no filesystem path, eliminating the same-user temp file read attack surface; sealed after write to prevent modificationTest plan
cargo test --workspacepasses (including new tests forharden_process,core_dumps_are_disabled,mlock_empty_buffer,munlock_empty_buffer,zeroize_str_clears_contents)cargo clippy --workspace --all-targets -- -D warningspasses cleancargo fmt --all -- --checkpasses cleannpmenc,sshenc,awsenc) compile with therun()signature change (&LaunchRequest->&mut LaunchRequest)