---
id: CVE-2026-89534
title: >-
  kernel: svcrdma: Clear sc_cm_id when ADDR_CHANGE replacement fails
  (CVE-2026-89534)
summary: >-
  A flaw was found in the Linux kernel's `svcrdma` module. This vulnerability
  occurs when the system attempts to handle an RDMA (Remote Direct Memory
  Access) address change, and a critical memory allocation fails. This can lead
  to a 'use-aft…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: vendor
cwe: CWE-825
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 6
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T09:58:39+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89534.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89534.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89534'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532026'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89534'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89534'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89534.mbox
  - url: 'https://git.kernel.org/stable/c/673e358ab7c11f8cec223c6a36a793056a67facd'
  - url: 'https://git.kernel.org/stable/c/01500306e1d50de7ca7a2cdcdfa28ac0523eb747'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.0034
epssPercentile: 0.24749
scores:
  vendor: 7
  cna: 8.8
ingestedAt: '2026-09-14T15:23:07.475Z'
---

## Overview

A flaw was found in the Linux kernel's `svcrdma` module. This vulnerability occurs when the system attempts to handle an RDMA (Remote Direct Memory Access) address change, and a critical memory allocation fails. This can lead to a 'use-after-free' error, where the system tries to access memory that has already been released. A local attacker could potentially exploit this to cause a system crash, leading to a denial of service, or in some scenarios, execute unauthorized code.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89534.json)

**kernel: svcrdma: Clear sc_cm_id when ADDR_CHANGE replacement fails** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.

Affected:

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

No fix planned:

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

Not affected:

- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat OpenShift Container Platform 4

## Remediation

Out of support scope