---
id: CVE-2025-23136
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  thermal: int340x: Add NULL check for adev

  Not all devices have an ACPI companion fwnode, so adev might be NULL.
  This is similar to the commit cd2fd6eab480
  ("platform/x…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  thermal: int340x: Add NULL check for adev

  Not all devices have an ACPI companion fwnode, so adev might be NULL.
  This is similar to the commit cd2fd6eab480
  ("platform/x…
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
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 3.18, < 5.4.292'
  - 'linux_kernel >= 5.5, < 5.10.236'
  - 'linux_kernel >= 5.11, < 5.15.180'
  - 'linux_kernel >= 5.16, < 6.1.134'
  - 'linux_kernel >= 6.2, < 6.6.87'
  - 'linux_kernel >= 6.7, < 6.12.23'
  - 'linux_kernel >= 6.13, < 6.13.11'
  - 'linux_kernel >= 6.14, < 6.14.2'
patched:
  - linux_kernel 6.14.2
published: '2025-04-16'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:17:46.047'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-23136'
references:
  - url: 'https://git.kernel.org/stable/c/0c49f12c77b77a706fd41370c11910635e491845'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2542a3f70e563a9e70e7ded314286535a3321bdb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3155d5261b518776d1b807d9d922669991bbee56'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6a810c462f099353e908c70619638884cb82229c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8e8f1ddf4186731649df8bc9646017369eb19186'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/953d28a4f459fcbde2d08f51aeca19d6b0f179f3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ac2eb7378319e3836cdf3a2c15a0bdf04c50e81d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bc7b5f782d28942dbdfda70df30ce132694a06de'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d0d21c8e44216fa9afdb3809edf213f3c0a8c060'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - 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-457936.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00223
epssPercentile: 0.12822
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2025-10-01T17:03:06.730334Z'
ingestedAt: '2026-09-08T15:33:26.998Z'
---

## Overview

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

thermal: int340x: Add NULL check for adev

Not all devices have an ACPI companion fwnode, so adev might be NULL.
This is similar to the commit cd2fd6eab480
("platform/x86: int3472: Check for adev == NULL").

Add a check for adev not being set and return -ENODEV in that case to
avoid a possible NULL pointer deref in int3402_thermal_probe().

Note, under the same directory, int3400_thermal_probe() has such a
check.

[ rjw: Subject edit, added Fixes: ]

## Affected

- `linux_kernel >= 3.18, < 5.4.292`
- `linux_kernel >= 5.5, < 5.10.236`
- `linux_kernel >= 5.11, < 5.15.180`
- `linux_kernel >= 5.16, < 6.1.134`
- `linux_kernel >= 6.2, < 6.6.87`
- `linux_kernel >= 6.7, < 6.12.23`
- `linux_kernel >= 6.13, < 6.13.11`
- `linux_kernel >= 6.14, < 6.14.2`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.14.2`