CVE-2026-115567
Tokio: Race condition in `tokio::time::Interval`
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-362 |
| Vendor | tokio-rs |
| Product | tokio |
| Published | Oct 23, 2026 |
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Affected Versions
tokio-rs / tokio
= 1.54.0
References
github.com: https://github.com/tokio-rs/tokio/security/advisories/GHSA-5wjr-9356-4wc8 github.com: https://github.com/tokio-rs/tokio/pull/8458 github.com: https://github.com/tokio-rs/tokio/pull/8692 github.com: https://github.com/tokio-rs/tokio/commit/2b4eba7833864c04ecd2f3e5f4a97ff4f6fa28d0 github.com: https://github.com/tokio-rs/tokio/commit/5ed619bbaba87357ee5103d71b75e7c84cad99c9 github.com: https://github.com/tokio-rs/tokio/releases/tag/tokio-1.54.1