{"id":"CVE-2026-115567","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-115567","generatedAt":"2026-10-28T02:24:17.561Z","title":"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.","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.","published":"2026-10-23T18:17:21.000Z","lastModified":"2026-10-23T19:42:25.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":5.8,"severity":"MEDIUM","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-362"],"affected":[],"epss":{"score":0.00111,"percentile":0.01293,"date":"2026-10-26","history":[{"date":"2026-10-24","score":0.0011,"percentile":0.01215}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.11%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-23T18:17:21.000Z","detail":{"score":"5.8","severity":"MEDIUM","publishedAt":"2026-10-23T18:17:21.303Z"},"summary":"New CVE, medium severity (CVSS 5.8)."}],"references":[{"url":"https://github.com/tokio-rs/tokio/commit/2b4eba7833864c04ecd2f3e5f4a97ff4f6fa28d0","source":"security-advisories@github.com"},{"url":"https://github.com/tokio-rs/tokio/commit/5ed619bbaba87357ee5103d71b75e7c84cad99c9","source":"security-advisories@github.com"},{"url":"https://github.com/tokio-rs/tokio/pull/8458","source":"security-advisories@github.com"},{"url":"https://github.com/tokio-rs/tokio/pull/8692","source":"security-advisories@github.com"},{"url":"https://github.com/tokio-rs/tokio/releases/tag/tokio-1.54.1","source":"security-advisories@github.com"},{"url":"https://github.com/tokio-rs/tokio/security/advisories/GHSA-5wjr-9356-4wc8","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-115567","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}