---
id: CVE-2026-72280
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2

  It is entirely possible for a guest to write to the ZCR_EL2 sysreg alias
  while in a nested context, as it is expec…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2

  It is entirely possible for a guest to write to the ZCR_EL2 sysreg alias
  while in a nested context, as it is expec…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'
cwe:
  - CWE-617
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 9
published: '2026-08-15'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T19:17:18.343'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72280'
references:
  - url: 'https://git.kernel.org/stable/c/5000bcae71c869cba6674c326fec2d8ad659ae3a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6561597dba97e3e8479a9919bda172cf43eb902c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7deadbc5dab5b8e2316364603bc6281129c8461c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9f1667098c6ae7ec81a9a56859cfdacb822aa0d0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72280.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-72280'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2516304'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-72280'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72280'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2026081558-CVE-2026-72280-0233@gregkh/T
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00186
epssPercentile: 0.08093
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T18:45:36.633652Z'
scores:
  nvd: 7.1
  vendor: 5.5
  cna: 7.1
ingestedAt: '2026-10-16T19:46:24.414Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2

It is entirely possible for a guest to write to the ZCR_EL2 sysreg alias
while in a nested context, as it is expected if FEAT_NV2 is advertised
to the L1 hypervisor.

Get rid of the bogus WARN which, since the hyp vectors were installed at
this point, has the effect of a hyp_panic...

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72280.json)