---
id: CVE-2024-42093
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net/dpaa2: Avoid explicit cpumask var allocation on stack

  For CONFIG_CPUMASK_OFFSTACK=y kernel, explicit allocation of cpumask
  variable on stack is not recommended sin…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net/dpaa2: Avoid explicit cpumask var allocation on stack

  For CONFIG_CPUMASK_OFFSTACK=y kernel, explicit allocation of cpumask
  variable on stack is not recommended sin…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H'
cwe:
  - CWE-787
vendor: linux
product: linux_kernel
affected:
  - linux_kernel < 5.4.279
  - 'linux_kernel >= 5.5, < 5.10.221'
  - 'linux_kernel >= 5.11, < 5.15.162'
  - 'linux_kernel >= 5.16, < 6.1.97'
  - 'linux_kernel >= 6.2, < 6.6.37'
  - 'linux_kernel >= 6.7, < 6.9.8'
patched:
  - linux_kernel 6.9.8
published: '2024-07-29'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:18:42.940'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-42093'
references:
  - url: 'https://git.kernel.org/stable/c/48147337d7efdea6ad6e49f5b8eb894b95868ef0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5e4f25091e6d06e99a23f724c839a58a8776a527'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/69f49527aea12c23b78fb3d0a421950bf44fb4e2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/763896ab62a672d728f5eb10ac90d98c607a8509'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a55afc0f5f20ba30970aaf7271929dc00eee5e7d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b2262b3be27cee334a2fa175ae3afb53f38fb0b1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d33fe1714a44ff540629b149d8fab4ac6967585c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/48147337d7efdea6ad6e49f5b8eb894b95868ef0'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/5e4f25091e6d06e99a23f724c839a58a8776a527'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/69f49527aea12c23b78fb3d0a421950bf44fb4e2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/763896ab62a672d728f5eb10ac90d98c607a8509'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/a55afc0f5f20ba30970aaf7271929dc00eee5e7d'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/b2262b3be27cee334a2fa175ae3afb53f38fb0b1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/d33fe1714a44ff540629b149d8fab4ac6967585c'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-355557.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-613116.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00229
epssPercentile: 0.13617
ingestedAt: '2026-10-15T03:30:12.728Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-09-10T16:18:31.047930Z'
---

## Overview

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

net/dpaa2: Avoid explicit cpumask var allocation on stack

For CONFIG_CPUMASK_OFFSTACK=y kernel, explicit allocation of cpumask
variable on stack is not recommended since it can cause potential stack
overflow.

Instead, kernel code should always use *cpumask_var API(s) to allocate
cpumask var in config-neutral way, leaving allocation strategy to
CONFIG_CPUMASK_OFFSTACK.

Use *cpumask_var API(s) to address it.

## Affected

- `linux_kernel < 5.4.279`
- `linux_kernel >= 5.5, < 5.10.221`
- `linux_kernel >= 5.11, < 5.15.162`
- `linux_kernel >= 5.16, < 6.1.97`
- `linux_kernel >= 6.2, < 6.6.37`
- `linux_kernel >= 6.7, < 6.9.8`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.9.8`