---
id: CVE-2026-89531
title: >-
  kernel: svcrdma: Reject connection when transport allocation fails
  (CVE-2026-89531)
summary: >-
  A flaw was found in the Linux kernel's svcrdma module. A remote attacker can
  exploit this vulnerability by repeatedly attempting connections when the
  system is under memory pressure. This can lead to a resource leak of
  `rdma_cm_id` objects…
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-772
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 6
  - enterprise_linux 7
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T21:55:51+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89531.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89531.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89531'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532393'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89531'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89531'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89531.mbox
  - url: 'https://git.kernel.org/stable/c/0944462247dcb7de7622cdaaadf5f05c52707dab'
  - url: 'https://git.kernel.org/stable/c/1f6a14c142fee4778c32709d1d54595c2e2b7991'
  - url: 'https://git.kernel.org/stable/c/3cf372cec7ab2cd8c6002bf775cc14d90ccb098b'
  - url: 'https://git.kernel.org/stable/c/6e21754bbf75075f3fee1cebc79f3417364235ec'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00209
epssPercentile: 0.09868
ingestedAt: '2026-09-14T11:11:19.886Z'
---

## Overview

A flaw was found in the Linux kernel's svcrdma module. A remote attacker can exploit this vulnerability by repeatedly attempting connections when the system is under memory pressure. This can lead to a resource leak of `rdma_cm_id` objects, which, if amplified, could result in a Denial of Service (DoS) due to resource exhaustion.

## Vendor advisories

- **Red Hat VEX** · Moderate · 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 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89531.json)

**kernel: svcrdma: Reject connection when transport allocation fails** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.

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

No fix planned:

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

## Remediation

Out of support scope