---
id: CVE-2026-98877
title: >-
  kernel: irqchip/gic-v4: Don't advertise VLPIs if no ITS is probed
  (CVE-2026-98877)
summary: >-
  A flaw was found in the Linux kernel's ARM Generic Interrupt Controller (GIC)
  driver. When virtual interrupt support is enabled on a system lacking an
  Interrupt Translation Service (ITS) controller, the kernel fails to disable
  virtual inte…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-476
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-10-23'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T11:18:55+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98877.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98877.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98877'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2559563'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98877'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98877'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98877.mbox
  - url: 'https://git.kernel.org/stable/c/3e4cae9f1472ba3c9fe87edee24074618b51f537'
  - url: 'https://git.kernel.org/stable/c/a2508b8855acc96abe69be73b41b672f1ef12516'
  - url: 'https://git.kernel.org/stable/c/e79934064be85fc9a3a6434da857307d8b78e33d'
  - url: 'https://git.kernel.org/stable/c/4761493dd663443f7353c184e6fa16e1cb3ac5a1'
  - url: 'https://git.kernel.org/stable/c/ab233119a19716b8f33e73ea7e092e0eb353cfbf'
  - url: 'https://git.kernel.org/stable/c/c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40'
  - url: 'https://git.kernel.org/stable/c/e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00179
epssPercentile: 0.074
ingestedAt: '2026-10-23T13:24:55.583Z'
---

## Overview

A flaw was found in the Linux kernel's ARM Generic Interrupt Controller (GIC) driver. When virtual interrupt support is enabled on a system lacking an Interrupt Translation Service (ITS) controller, the kernel fails to disable virtual interrupt advertising. A local user capable of running a virtual machine under these conditions can trigger an unhandled null pointer dereference, causing a kernel crash and resulting in a Denial of Service (DoS).

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98877.json)

**kernel: irqchip/gic-v4: Don't advertise VLPIs if no ITS is probed** — rated Moderate by Red Hat. Released 2026-10-23, updated 2026-10-26.

Affected:

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

No fix planned:

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

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7

## Remediation

Fix deferred