---
id: CVE-2024-26621
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mm: huge_memory: don't force huge page alignment on 32 bit

  commit efa7df3e3bb5 ("mm: align larger anonymous mappings on THP
  boundaries") caused two issues [1] [2] repo…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mm: huge_memory: don't force huge page alignment on 32 bit

  commit efa7df3e3bb5 ("mm: align larger anonymous mappings on THP
  boundaries") caused two issues [1] [2] repo…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.18, < 6.1.81'
  - 'linux_kernel >= 6.2, < 6.6.46'
  - 'linux_kernel >= 6.7, < 6.7.6'
  - linux_kernel = 6.8
patched:
  - linux_kernel 6.7.6
published: '2024-03-02'
updated: '2026-08-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-26621'
references:
  - url: 'https://git.kernel.org/stable/c/4ef9ad19e17676b9ef071309bc62020e2373705d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6ea9aa8d97e6563676094cb35755884173269555'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7432376c913381c5f24d373a87ff629bbde94b47'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/87632bc9ecff5ded93433bc0fca428019bdd1cfe'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/08/3'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/08/4'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/08/5'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/08/6'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/08/7'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/08/8'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/09/1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/10/5'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/10/7'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/10/8'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/11/4'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/11/5'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/11/7'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/12/3'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/13/2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/13/7'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/15/1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/15/2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/16/1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/16/2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/29/2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.openwall.com/lists/oss-security/2024/07/30/2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/4ef9ad19e17676b9ef071309bc62020e2373705d'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/7432376c913381c5f24d373a87ff629bbde94b47'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/87632bc9ecff5ded93433bc0fca428019bdd1cfe'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://zolutal.github.io/aslrnt/'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01006
epssPercentile: 0.61445
ingestedAt: '2026-08-05T05:58:02.343Z'
---

## Overview

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

mm: huge_memory: don't force huge page alignment on 32 bit

commit efa7df3e3bb5 ("mm: align larger anonymous mappings on THP
boundaries") caused two issues [1] [2] reported on 32 bit system or compat
userspace.

It doesn't make too much sense to force huge page alignment on 32 bit
system due to the constrained virtual address space.

[1] https://lore.kernel.org/linux-mm/d0a136a0-4a31-46bc-adf4-2db109a61672@kernel.org/
[2] https://lore.kernel.org/linux-mm/CAJuCfpHXLdQy1a2B6xN2d7quTYwg2OoZseYPZTRpU0eHHKD-sQ@mail.gmail.com/

## Affected

- `linux_kernel >= 5.18, < 6.1.81`
- `linux_kernel >= 6.2, < 6.6.46`
- `linux_kernel >= 6.7, < 6.7.6`
- `linux_kernel = 6.8`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.7.6`