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.
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Tue, 03 Nov 2026 16:30:00 +0000
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| 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. | |
| Title | Tokio: Race condition in `tokio::time::Interval` | |
| Weaknesses | CWE-362 | |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-23T17:13:16.161Z
Updated: 2026-10-29T17:59:47.636Z
Reserved: 2026-10-22T22:53:15.237Z
Link: CVE-2026-115567
No data.
Status : Awaiting Analysis
Published: 2026-10-23T18:17:21.303
Modified: 2026-10-29T18:17:24.127
Link: CVE-2026-115567
No data.
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