VDB
CVE-2026-115567
CVE-2026-115567
PUBLISHED
CVSS 5.8 MEDIUM
Reported by GitHub_M · Published October 23, 2026
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.
Risk Scores
CVSS 4.0
5.8
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
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| tokio-rs | tokio | = 1.54.0 |
| crates.io | tokio | 1.54.0 |
| wolfi | xh | 0 |
| wolfi | yazi | 0 |
| wolfi | topgrade | 0 |
| tokio-rs | tokio | 1.54.0 |
| wolfi | wasmtime | 0 |
Timeline
- Oct 21, 2026 CVE Published
- Oct 24, 2026 EPSS Score
- Oct 24, 2026 Security Advisory
References
- https://github.com/tokio-rs/tokio/security/advisories/GHSA-5wjr-9356-4wc8 x_refsource_CONFIRM
- https://github.com/tokio-rs/tokio/pull/8458 x_refsource_MISC
- https://github.com/tokio-rs/tokio/pull/8692 x_refsource_MISC
- https://github.com/tokio-rs/tokio/commit/2b4eba7833864c04ecd2f3e5f4a97ff4f6fa28d0 x_refsource_MISC
- https://github.com/tokio-rs/tokio/commit/5ed619bbaba87357ee5103d71b75e7c84cad99c9 x_refsource_MISC
- https://github.com/tokio-rs/tokio/releases/tag/tokio-1.54.1 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-115567 advisory
- https://github.com/advisories/GHSA-5wjr-9356-4wc8 advisory
- https://rustsec.org/advisories/RUSTSEC-2026-0384.html url