{"cve":"CVE-2026-115567","nvd":{"published":"2026-10-23T18:17:21.303","modified":"2026-10-23T19:42:24.553","status":"Awaiting Analysis","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.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","score":5.8},"cvss_v3":null,"cwes":["CWE-362"],"references":["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"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:35.584907681+00:00"},"epss":{"cve":"CVE-2026-115567","score":0.00111,"percentile":0.01295,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-5wjr-9356-4wc8","url":"https://osv.dev/vulnerability/GHSA-5wjr-9356-4wc8","summary":"Tokio: Race condition in `tokio::time::Interval`","modified":"2026-10-23T21:10:33.527479876Z","packages":[{"ecosystem":"crates.io","name":"tokio","purl":"pkg:cargo/tokio","ranges":[">=1.54.0 <1.54.1"],"fixed":["1.54.1"]}]},{"id":"RUSTSEC-2026-0384","url":"https://osv.dev/vulnerability/RUSTSEC-2026-0384","summary":"Race condition in `tokio::time::Interval` on Tokio v1.54.0","modified":"2026-10-24T08:30:13Z","packages":[{"ecosystem":"crates.io","name":"tokio","purl":"pkg:cargo/tokio","ranges":[">=1.54.0 <1.54.1"],"fixed":["1.54.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}