scim_proto and kanidm_proto have an authenticated process abort via SCIM filter stack exhaustion

Summary A single unauthenticated GET to any /scim/v1/... endpoint with a ?filter= query string of a few thousand nested parentheses ≈ 4–12 KB drives the recursive-descent PEG parser past the worker thread's stack guard page. Rust responds to stack overflow with std::process::abort — the entire...