---
id: CVE-2026-46174
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

  Make sure resources are not improperly shared in the op cache and
  cause instruction corr…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

  Make sure resources are not improperly shared in the op cache and
  cause instruction corr…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 3.16.58, < 3.17'
  - 'linux_kernel >= 4.4.144, < 4.5'
  - 'linux_kernel >= 4.9.102, < 4.10'
  - 'linux_kernel >= 4.14.1, < 5.10.256'
  - 'linux_kernel >= 5.11, < 5.15.207'
  - 'linux_kernel >= 5.16, < 6.1.173'
  - 'linux_kernel >= 6.2, < 6.6.139'
  - 'linux_kernel >= 6.7, < 6.12.88'
  - 'linux_kernel >= 6.13, < 6.18.30'
  - 'linux_kernel >= 6.19, < 7.0.7'
  - linux_kernel = 4.14
  - linux_kernel = 7.1
patched:
  - linux_kernel 7.0.7
published: '2026-05-28'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:19:48.433'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46174'
references:
  - url: 'https://git.kernel.org/stable/c/1cd85a19748b2407830376a5cbae5c0f126016e5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1e23b30a80b14e5764657401ee2cca030525ae8e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/251497955f2314cd39d43191e81c6151dead4c7b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/28f5ed477eef166d678d6966762cbc1de9b4f436'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9109489cc8c34e50d15575a3d1ff82af586bc1aa'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c21b90f77687075115d989e53a8ec5e2bb427ab1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f5bc3aef7df46eaaf423d7413ab8833f704ae576'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ff6fc65b3bf73acc5ee71919154d830ad5431362'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-019113.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-082556.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-457936.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00153
epssPercentile: 0.04383
ingestedAt: '2026-09-08T15:33:26.988Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T15:20:43.490528Z'
---

## Overview

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

x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

Make sure resources are not improperly shared in the op cache and
cause instruction corruption this way.

## Affected

- `linux_kernel >= 3.16.58, < 3.17`
- `linux_kernel >= 4.4.144, < 4.5`
- `linux_kernel >= 4.9.102, < 4.10`
- `linux_kernel >= 4.14.1, < 5.10.256`
- `linux_kernel >= 5.11, < 5.15.207`
- `linux_kernel >= 5.16, < 6.1.173`
- `linux_kernel >= 6.2, < 6.6.139`
- `linux_kernel >= 6.7, < 6.12.88`
- `linux_kernel >= 6.13, < 6.18.30`
- `linux_kernel >= 6.19, < 7.0.7`
- `linux_kernel = 4.14`
- `linux_kernel = 7.1`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.7`