---
id: CVE-2026-72280
title: 'KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2'
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'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f <
    6561597dba97e3e8479a9919bda172cf43eb902c
  - >-
    Linux >= 0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f <
    5000bcae71c869cba6674c326fec2d8ad659ae3a
  - >-
    Linux >= 0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f <
    7deadbc5dab5b8e2316364603bc6281129c8461c
  - >-
    Linux >= 0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f <
    9f1667098c6ae7ec81a9a56859cfdacb822aa0d0
  - Linux 6.11
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T18:45:36.633652Z'
published: '2026-08-15'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T18:55:14.328Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-72280'
references:
  - url: 'https://git.kernel.org/stable/c/6561597dba97e3e8479a9919bda172cf43eb902c'
  - url: 'https://git.kernel.org/stable/c/5000bcae71c869cba6674c326fec2d8ad659ae3a'
  - url: 'https://git.kernel.org/stable/c/7deadbc5dab5b8e2316364603bc6281129c8461c'
  - url: 'https://git.kernel.org/stable/c/9f1667098c6ae7ec81a9a56859cfdacb822aa0d0'
tags:
  - cve.org
epss: 0.00186
epssPercentile: 0.07646
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...

## Affected

- `Linux >= 0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f < 6561597dba97e3e8479a9919bda172cf43eb902c`
- `Linux >= 0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f < 5000bcae71c869cba6674c326fec2d8ad659ae3a`
- `Linux >= 0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f < 7deadbc5dab5b8e2316364603bc6281129c8461c`
- `Linux >= 0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f < 9f1667098c6ae7ec81a9a56859cfdacb822aa0d0`
- `Linux 6.11`

## Remediation

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