{"id":"CVE-2026-115567","state":"PUBLISHED","title":"Tokio: Race condition in `tokio::time::Interval`","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.","publishedAt":"2026-10-23T17:13:16.161Z","updatedAt":"2026-10-29T17:59:47.636Z","severity":{"score":5.8,"label":"Medium","version":"4.0","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","source":"GitHub_M"},"assigner":"GitHub_M","products":["tokio-rs tokio"],"affected":[{"vendor":"tokio-rs","product":"tokio","versions":[{"version":"= 1.54.0","status":"affected"}]}],"references":["https://github.com/tokio-rs/tokio/security/advisories/GHSA-5wjr-9356-4wc8","https://github.com/tokio-rs/tokio/pull/8458","https://github.com/tokio-rs/tokio/pull/8692","https://github.com/tokio-rs/tokio/commit/2b4eba7833864c04ecd2f3e5f4a97ff4f6fa28d0","https://github.com/tokio-rs/tokio/commit/5ed619bbaba87357ee5103d71b75e7c84cad99c9","https://github.com/tokio-rs/tokio/releases/tag/tokio-1.54.1"],"weaknesses":["CWE-362"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/115xxx/CVE-2026-115567.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-115567","state":"PUBLISHED","datePublished":"2026-10-23T17:13:16.161Z","dateUpdated":"2026-10-29T17:59:47.636Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-22T22:53:15.237Z"},"containers":{"cna":{"title":"Tokio: Race condition in `tokio::time::Interval`","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"tokio-rs","product":"tokio","versions":[{"version":"= 1.54.0","status":"affected"}]}],"references":[{"url":"https://github.com/tokio-rs/tokio/security/advisories/GHSA-5wjr-9356-4wc8","name":"https://github.com/tokio-rs/tokio/security/advisories/GHSA-5wjr-9356-4wc8","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/tokio-rs/tokio/pull/8458","name":"https://github.com/tokio-rs/tokio/pull/8458","tags":["x_refsource_MISC"]},{"url":"https://github.com/tokio-rs/tokio/pull/8692","name":"https://github.com/tokio-rs/tokio/pull/8692","tags":["x_refsource_MISC"]},{"url":"https://github.com/tokio-rs/tokio/commit/2b4eba7833864c04ecd2f3e5f4a97ff4f6fa28d0","name":"https://github.com/tokio-rs/tokio/commit/2b4eba7833864c04ecd2f3e5f4a97ff4f6fa28d0","tags":["x_refsource_MISC"]},{"url":"https://github.com/tokio-rs/tokio/commit/5ed619bbaba87357ee5103d71b75e7c84cad99c9","name":"https://github.com/tokio-rs/tokio/commit/5ed619bbaba87357ee5103d71b75e7c84cad99c9","tags":["x_refsource_MISC"]},{"url":"https://github.com/tokio-rs/tokio/releases/tag/tokio-1.54.1","name":"https://github.com/tokio-rs/tokio/releases/tag/tokio-1.54.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.8,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-362","lang":"en","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-23T17:13:16.161Z"},"source":{"advisory":"GHSA-5wjr-9356-4wc8","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-29T17:59:30.494310Z","id":"CVE-2026-115567","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-29T17:59:47.636Z"}}]}}}