---
id: CVE-2026-89528
title: >-
  kernel: svcrdma: Reject Read lists that exceed the page budget
  (CVE-2026-89528)
summary: >-
  A flaw was found in the Linux kernel's svcrdma component. A remote attacker
  could send specially crafted Read lists that exceed the page budget. This can
  lead to a NULL pointer dereference during Direct Memory Access (DMA) mapping,
  potenti…
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-476
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: '2026-09-18T13:44:03+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89528.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89528.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89528'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532188'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89528'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89528'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89528.mbox
  - url: 'https://git.kernel.org/stable/c/0ca487abb3bdf581851664b5db21f364caf57682'
  - url: 'https://git.kernel.org/stable/c/1a3af2262cb384112ef38632de4690682be528b4'
  - url: 'https://git.kernel.org/stable/c/465f511f59a0fa7a80d5d1073c4b24f28ea38f58'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00655
epssPercentile: 0.49172
scores:
  vendor: 5.9
  cna: 7.5
ingestedAt: '2026-09-14T15:23:07.475Z'
---

## Overview

A flaw was found in the Linux kernel's svcrdma component. A remote attacker could send specially crafted Read lists that exceed the page budget. This can lead to a NULL pointer dereference during Direct Memory Access (DMA) mapping, potentially causing a system crash and a denial of service.

## 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-2026-89528.json)

**kernel: svcrdma: Reject Read lists that exceed the page budget** — 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