---
id: CVE-2022-1852
title: >-
  A NULL pointer dereference flaw was found in the Linux kernel’s KVM module,
  which can lead to a denial of service in the x86_emulate_insn in
  arch/x86/kvm/emulate.c
summary: >-
  A NULL pointer dereference flaw was found in the Linux kernel’s KVM module,
  which can lead to a denial of service in the x86_emulate_insn in
  arch/x86/kvm/emulate.c. This flaw occurs while executing an illegal
  instruction in guest in the …
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'
cwe:
  - CWE-476
  - CWE-476
vendor: linux
product: linux_kernel
affected:
  - linux_kernel < 5.19
  - enterprise_linux = 8.0
  - enterprise_linux = 9.0
patched:
  - linux_kernel 5.19
published: '2022-06-30'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:17:19.797'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-1852'
references:
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2089815'
    label: secalert@redhat.com
  - url: >-
      https://github.com/torvalds/linux/commit/fee060cd52d69c114b62d1a2948ea9648b5131f9
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2089815'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://github.com/torvalds/linux/commit/fee060cd52d69c114b62d1a2948ea9648b5131f9
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-794697.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
epss: 0.00305
epssPercentile: 0.21577
ingestedAt: '2026-10-14T13:30:58.414Z'
---

## Overview

A NULL pointer dereference flaw was found in the Linux kernel’s KVM module, which can lead to a denial of service in the x86_emulate_insn in arch/x86/kvm/emulate.c. This flaw occurs while executing an illegal instruction in guest in the Intel CPU.

## Affected

- `linux_kernel < 5.19`
- `enterprise_linux = 8.0`
- `enterprise_linux = 9.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 5.19`