CVE-2026-115567

Name	CVE-2026-115567
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rust-tokio (PTS)	bookworm	1.24.2-1	fixed
	trixie	1.43.1-1	fixed
	forky	1.53.1-1	fixed
	sid	1.53.2-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rust-tokio	source	(unstable)	(not affected)

Notes

- rust-tokio <not-affected> (Vulnerable code introduced later)
https://github.com/tokio-rs/tokio/security/advisories/GHSA-5wjr-9356-4wc8
https://github.com/tokio-rs/tokio/pull/8692
Introduced with: https://github.com/tokio-rs/tokio/commit/af4f3c2a999248310b81cfdad861c0fc262695b1 (tokio-1.54.0)
Fixed by: https://github.com/tokio-rs/tokio/commit/5ed619bbaba87357ee5103d71b75e7c84cad99c9 (tokio-1.54.1)