FIND-20260410-001 · 2026-04-10 · Innovation Veille
Tokio 1.51.1 — Semaphore and UDP socket fixes
release
MEDIUM
Tokio 1.51.1 (released April 8, 2026) is a patch release fixing a semaphore reopening bug after forget operations, correcting error surfacing from SO_ERROR on Linux UDP socket receive, fixing an unstable worker metrics counter, and preventing file descriptor leaks when cancelling io_uring open operations. These are stability fixes with no API changes. Last known version was 1.51.1 — no change from tracked version.
Source
https://github.com/tokio-rs/tokio/releases/tag/tokio-1.51.1
ODS Impact
Tokio is the async runtime underpinning all ODS Rust services (oid, billing-engine, pdf-engine, docstore). The semaphore fix is directly relevant to rate-limiting and connection pool patterns. No breaking changes — upgrade is safe and recommended for stability.
Security Review
License: MIT | Maintenance: ACTIVE | Risk: LOW | Recommendation: SAFE_TO_USE
Tags
rust
tokio
async
runtime
patch