CVE-2026-115567

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/tokio-rs/tokio/commit/2b4eba7833864c04ecd2f3e5f4a97ff4f6fa28d0
https://github.com/tokio-rs/tokio/commit/5ed619bbaba87357ee5103d71b75e7c84cad99c9
https://github.com/tokio-rs/tokio/pull/8458
https://github.com/tokio-rs/tokio/pull/8692
https://github.com/tokio-rs/tokio/releases/tag/tokio-1.54.1
https://github.com/tokio-rs/tokio/security/advisories/GHSA-5wjr-9356-4wc8

Configurations

No configuration.

History

23 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-23 18:17

Updated : 2026-10-29 18:17

NVD link : CVE-2026-115567

Mitre link : CVE-2026-115567

CVE.ORG link : CVE-2026-115567

JSON object : View

Products Affected

No product.

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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