---
id: CVE-2022-39188
title: >-
  An issue was discovered in include/asm-generic/tlb.h in the Linux kernel
  before 5.19
summary: >-
  An issue was discovered in include/asm-generic/tlb.h in the Linux kernel
  before 5.19. Because of a race condition (unmap_mapping_range versus munmap),
  a device driver can free a page while it still has stale TLB entries. This
  only occurs…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-362
vendor: linux
product: linux_kernel
affected:
  - linux_kernel < 5.19
  - debian_linux = 10.0
  - debian_linux = 11.0
patched:
  - linux_kernel 5.19
published: '2022-09-02'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T18:17:04.473'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-39188'
references:
  - url: 'https://bugs.chromium.org/p/project-zero/issues/detail?id=2329'
    label: cve@mitre.org
  - url: 'https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19'
    label: cve@mitre.org
  - url: >-
      https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15
    label: cve@mitre.org
  - url: >-
      https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15
    label: cve@mitre.org
  - url: 'https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html'
    label: cve@mitre.org
  - url: 'https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html'
    label: cve@mitre.org
  - url: >-
      https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg%40mail.gmail.com/
    label: cve@mitre.org
  - url: 'https://www.debian.org/security/2022/dsa-5257'
    label: cve@mitre.org
  - url: 'https://bugs.chromium.org/p/project-zero/issues/detail?id=2329'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg%40mail.gmail.com/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2022/dsa-5257'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-769027.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-794697.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-831302.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00246
epssPercentile: 0.15736
ingestedAt: '2026-10-14T18:47:39.269Z'
---

## Overview

An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries. This only occurs in situations with VM_PFNMAP VMAs.

## Affected

- `linux_kernel < 5.19`
- `debian_linux = 10.0`
- `debian_linux = 11.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 5.19`