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Fencer Intel
medium 5.8

CVE-2026-115567 json

Tokio: Race condition in `tokio::time::Interval`

published 19d ago modified 11d ago also EUVD-2026-109110 , GHSA-5wjr-9356-4wc8 , RUSTSEC-2026-0384

cvss
5.8
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

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.

Patch / fix

  • crates.io tokio 1.54.1
  • tokio tokio 1.54.1

Is CVE-2026-115567 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-115567 updated cvss 5.3

tokio: Tokio: Heap memory corruption via race condition in timer handling

  • Red Hat Ansible Automation Orchestrator 2026 ansible-automation-platform/automation-orchestrator-backend-rhel9 Red Hat Confidential Cluster Operator confidential-clusters-beta/compute-pcrs-rhel9, confidential-clusters-beta/registration-server-rhel9, confidential-clusters-beta/attestation-key-register-rhel9, confidential-clusters-beta/confidential-cluster-rhel9-operator, confidential-clusters-beta/confidential-cluster-operator-bundle Red Hat Confidential Compute Attestation build-of-trustee/trustee-rhel9, openshift-sandboxed-containers/osc-podvm-payload-rhel9 Red Hat Lightspeed Services for Advanced Cluster Management lightspeed-services-acm/ocp-rules-rhel9
    affected: no fix available “Fix deferred”
  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/vector-rhel9
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-ocp-rag-rhel9 Red Hat OpenShift Service Mesh 3 openshift-service-mesh/istio-ztunnel-rhel9 Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-fact-rhel8, advanced-cluster-security/rhacs-fact-rhel9
    affected: no fix available “Fix deferred”
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-27/hub-rhel9, ansible-automation-platform-25/lightspeed-chatbot-rhel8, ansible-automation-platform-26/lightspeed-chatbot-rhel9, ansible-automation-platform-27/lightspeed-chatbot-rhel9
    affected: no fix available, no fix planned “Out of support scope”
  • Red Hat Connectivity Link 1 rhcl-1/limitador-rhel9, rhcl-1/wasm-shim-rhel9 Red Hat Developer Hub 1 rhdh/rhdh-must-gather-rhel9 Red Hat Directory Server 11 389-ds-base 1.4.3.39-29.module+el8dsrv+25089+418ba535 Red Hat Directory Server 12 389-ds-base 2.8.0-7.module+el9dsrv+24844+8988a132 Red Hat Directory Server 13 389-ds-base 3.2.0-7.el10dsrv Red Hat Enterprise Linux 7 389-ds-base, 389-ds-base-libs, 389-ds-base-snmp, 389-ds-base 3.2.0-7.el10dsrv
    +12 more products
    Red Hat Enterprise Linux 8 rls, rust, cargo, clippy, rustfmt, netavark, +23 more Red Hat Enterprise Linux 9 ctdb, rust, bootc, cargo, goose, samba, +105 more Red Hat Enterprise Linux 10 mesa 26.1.1-2.el10, rust 1.92.0-2.el10_2, bootc 1.17.1-1.el10_3, goose 1.45.0-1.el10_2, libkrun 1.17.4-1.el10, netavark 2.1.0-1.el10, +23 more Red Hat Enterprise Linux AI (RHEL AI) 3 rust 1.92.0-2.el10_2 Red Hat Enterprise Linux command line assistant rhel-cla/rhel-knowledge-bridge-rhel10 Red Hat OpenShift AI (RHOAI) rhai/base-image-torch-2.14-cpu-rhel9, rhai/base-image-torch-2.14-cuda-13.0-rhel9, rhoai/odh-fms-guardrails-orchestrator-rhel9, rhoai/odh-model-registry-job-async-upload-rhel9, rhoai/odh-trustyai-vllm-orchestrator-gateway-rhel9 Red Hat OpenShift Container Platform 4 bootupd, afterburn, conmon-rs, rpm-ostree, kata-containers, rpm-ostree-libs, +7 more Red Hat OpenShift Container Platform 5 conmon-rs, kata-containers, rust-coreos-installer 0.27.0-2.el10 Red Hat OpenShift Update Service openshift-update-service/openshift-update-service-rhel8 Red Hat Quay 3 quay/quay-rhel9 Red Hat Trusted Artifact Signer rhtas/tuffer-rhel9, rhtas/tuftool-rhel9 Red Hat Trusted Profile Analyzer rhtpa/rhtpa-rhel10, rhtpa/rhtpa-trustification-service-rhel9
    affected: no fix available “Fix deferred”
  • Red Hat Hardened Images rust 1.92.0-2.el10_2, netavark 2.1.0-1.el10, boost 1.90.0-13.1.hum1, openshell 0.1.2-0.2.hum1, aardvark-dns 2.1.0-1.el10, rust-bootupd 0.2.35-1.el10, +1 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
11d ago

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 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
CNA 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/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

Affected packages

ecosystem package affected fixed in
crates.io tokio
>=1.54.0, <1.54.1
1.54.1

Affected products

  • tokio-rs tokio

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.