CVE-2026-115567
Tokio: Race condition in `tokio::time::Interval`
Fetching some sources has been requested. Reload in about a minute to see them.
CVSS v3.1 (listed by NVD)
—
Not scored
CVSS v4.0 (listed by NVD)
5.8
MEDIUM
Scored by github.com (not yet scored by NVD)
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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS (listed by CVE.org)
5.8
MEDIUM
Scored by CNA (GitHub_M) · v4.0
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
EPSS exploit probability
0.1%
Percentile 1.2%
as of 2026-10-24
CISA KEV
—
Not listed
Attack conditions and impact
Derived from the CNA (via NVD) CVSS 4.0 vector
LocalLoginNo interactionConditions
Confidentiality NIntegrity LAvailability H
| Metric | Value | Meaning |
|---|---|---|
| Attack vector AV | L | Local |
| Attack complexity AC | H | High (conditions required) |
| Attack requirements AT | P | Present |
| Privileges required PR | L | Regular user |
| User interaction UI | N | None |
| Confidentiality (vulnerable system) VC | N | None |
| Integrity (vulnerable system) VI | L | Low |
| Availability (vulnerable system) VA | H | High |
| Confidentiality (subsequent systems) SC | N | None |
| Integrity (subsequent systems) SI | N | None |
| Availability (subsequent systems) SA | N | None |
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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Description
NVD
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 assessments
| Provider | Version | Score | Vector |
|---|---|---|---|
| NVD / [email protected] (Secondary) | 4.0 | 5.8 MEDIUM | 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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| CNA / GitHub_M | 4.0 | 5.8 MEDIUM | 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 and packages
CNA (CVE.org)
| Vendor | Product | Versions |
|---|---|---|
| tokio-rs | tokio | affected: = 1.54.0 |
Open-source packages (GitHub Advisory / OSV)
Tokio: Race condition in `tokio::time::Interval`
| Ecosystem | Package | Affected versions | Fixed in |
|---|---|---|---|
| crates.io | tokio | = 1.54.0 | 1.54.1 |
Race condition in `tokio::time::Interval` on Tokio v1.54.0
| Ecosystem | Package | Affected versions | Fixed in |
|---|---|---|---|
| crates.io | tokio | >= 1.54.0, < 1.54.1 | 1.54.1 |
Linux distribution status
References (10)
- https://crates.io/crates/tokio OSV
- https://github.com/advisories/GHSA-5wjr-9356-4wc8 GHSA
- https://github.com/tokio-rs/tokio/commit/2b4eba7833864c04ecd2f3e5f4a97ff4f6fa28d0 NVD, CNA, GHSA x_refsource_MISC
- https://github.com/tokio-rs/tokio/commit/5ed619bbaba87357ee5103d71b75e7c84cad99c9 NVD, CNA, GHSA x_refsource_MISC
- https://github.com/tokio-rs/tokio/pull/8458 NVD, CNA, GHSA x_refsource_MISC
- https://github.com/tokio-rs/tokio/pull/8692 NVD, CNA, GHSA, OSV x_refsource_MISC
- https://github.com/tokio-rs/tokio/releases/tag/tokio-1.54.1 NVD, CNA, GHSA x_refsource_MISC
- https://github.com/tokio-rs/tokio/security/advisories/GHSA-5wjr-9356-4wc8 NVD, CNA, GHSA x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-115567 GHSA
- https://rustsec.org/advisories/RUSTSEC-2026-0384.html GHSA, OSV