---
id: CVE-2026-89914
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  KVM: arm64: Sign-extend VA for range-based TLBI invalidation

  When the decode_range_tlbi() helper was moved to be used for S1 TLBIs,
  the required sign extension was omi…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  KVM: arm64: Sign-extend VA for range-based TLBI invalidation

  When the decode_range_tlbi() helper was moved to be used for S1 TLBIs,
  the required sign extension was omi…
severity: critical
cvss: 9.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 85bba00425ae0b4b30938ebfdde6d986e5423aff <
    72bce82c4171bf330919ff1b64dc0a36c254ec7d
  - >-
    Linux >= 85bba00425ae0b4b30938ebfdde6d986e5423aff <
    3feb83918e30f0472e058224b926ebfe8a064fac
  - >-
    Linux >= 85bba00425ae0b4b30938ebfdde6d986e5423aff <
    2393470085649f0b973ecceb26fe8fc71edde0c1
  - Linux 6.16
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T15:18:17.647'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89914'
references:
  - url: 'https://git.kernel.org/stable/c/2393470085649f0b973ecceb26fe8fc71edde0c1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3feb83918e30f0472e058224b926ebfe8a064fac'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/72bce82c4171bf330919ff1b64dc0a36c254ec7d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-16T10:53:53.974Z'
epss: 0.00178
epssPercentile: 0.07611
---

## Overview

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

KVM: arm64: Sign-extend VA for range-based TLBI invalidation

When the decode_range_tlbi() helper was moved to be used for S1 TLBIs,
the required sign extension was omitted. Add it.

As a result, special care must be taken to not overflow PA bits when
this is used for S2 invalidation.

## Remediation

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