---
id: CVE-2026-98469
title: 'kernel: KVM: arm64: Fix AArch32 DBGBXVR<n> handling (CVE-2026-98469)'
summary: >-
  A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM)
  subsystem for ARM64 architectures. Improper handling of specific debug
  register accesses in 32-bit ARM (AArch32) mode causes the hypervisor to
  encounter an internal …
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-617
vendor: Red Hat
product: Red Hat Enterprise Linux 10
affected:
  - enterprise_linux 10
published: '2026-10-18'
updated: '2026-10-24'
sourceUpdated: '2026-10-24T14:27:46+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98469.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98469.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98469'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2554830'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98469'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98469'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98469.mbox
  - url: 'https://git.kernel.org/stable/c/8530a05b304d312fe7dfbc5df7d3e87cc31b256a'
  - url: 'https://git.kernel.org/stable/c/af6813d16ace2765011ca1c567be86ade1d1ee8e'
  - url: 'https://git.kernel.org/stable/c/6b1bca1b1ab77f60a62087337bfe6e2f0efb9e6d'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00174
epssPercentile: 0.06861
scores:
  vendor: 5.5
  cna: 7.1
ingestedAt: '2026-10-18T15:45:12.299Z'
---

## Overview

A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) subsystem for ARM64 architectures. Improper handling of specific debug register accesses in 32-bit ARM (AArch32) mode causes the hypervisor to encounter an internal assertion failure. A user inside a guest virtual machine can exploit this vulnerability by accessing these registers, leading to immediate termination of the virtual machine and resulting in a Denial of Service (DoS).

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98469.json)

**kernel: KVM: arm64: Fix AArch32 DBGBXVR<n> handling** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-24.

Affected:

- Red Hat Enterprise Linux 10

No fix planned:

- Red Hat Enterprise Linux 10

Not affected:

- 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

Fix deferred