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[ CVE-2026-115567 · Published 23 Oct 2026 ]

Tokio: Race condition in `tokio::time::Interval`

CVSS 5.8 EPSS <1%Fix available

[ Description ]Official description

Tokio is a runtime for writing applications with Rust. In 1.54.0, a race condition between tokio::time::Interval::poll_tick (including .tick().await) and the multi-threaded runtime's time driver could drop an internal timer entry without synchronizing with the driver thread that was firing it. The race caused a use-after-free on the timer's waker and task state in safe Rust, which could produce assertion panics, task reference-count corruption, or heap memory corruption. This issue is fixed in 1.54.1.

[ Fixes ]Fixes and patches

  • tokio 1.54.1Fixed version · GitHub Advisories · rust package tokio: upgrade to 1.54.1 or later (affected = 1.54.0)

[ Packages ]Affected open-source packages

[ References ]References