---
id: CVE-2026-89764
title: 'kernel: rust: devres: fix race between concurrent revokers (CVE-2026-89764)'
summary: >-
  A flaw was found in the Linux kernel's `rust: devres` component. A race
  condition exists when two processes attempt to revoke a `Devres` resource
  concurrently. This can lead to a use-after-free vulnerability, where one
  process might free r…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-825
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
affected:
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T18:29:23+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89764.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89764.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89764'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532452'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89764'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89764'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89764.mbox
  - url: 'https://git.kernel.org/stable/c/acc516dfa1972d31836b50abc0115216cd0fccc5'
  - url: 'https://git.kernel.org/stable/c/c7e3d57c705ab1053a6a1bbef96795e792da1540'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00143
epssPercentile: 0.04003
scores:
  vendor: 5.3
  cna: 7.8
ingestedAt: '2026-09-14T15:23:07.472Z'
---

## Overview

A flaw was found in the Linux kernel's `rust: devres` component. A race condition exists when two processes attempt to revoke a `Devres` resource concurrently. This can lead to a use-after-free vulnerability, where one process might free resources that another process is still actively using. Such an issue could result in system instability or unexpected behavior.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89764.json)

**kernel: rust: devres: fix race between concurrent revokers** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-21.

Not affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Refer to the advisory for fix availability.