---
id: CVE-2026-89982
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  i2c: mux: Fix channel node leak on adapter add failure

  i2c_mux_add_adapter() takes a reference to the Device Tree channel node
  before registering the new adapter
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  i2c: mux: Fix channel node leak on adapter add failure

  i2c_mux_add_adapter() takes a reference to the Device Tree channel node
  before registering the new adapter. If a…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= bc45449b1444611d68466ae7f45f235420d79019 <
    4f42f70afd2447f3c82ca69d1e03466a75348ba9
  - >-
    Linux >= bc45449b1444611d68466ae7f45f235420d79019 <
    4c9bc46a2a4afb7a11c48d33bdf19febab431015
  - >-
    Linux >= bc45449b1444611d68466ae7f45f235420d79019 <
    dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1
  - >-
    Linux >= bc45449b1444611d68466ae7f45f235420d79019 <
    0927153f2abf48b6cc3e5f27063a17f7a8d47f38
  - >-
    Linux >= bc45449b1444611d68466ae7f45f235420d79019 <
    b580f062b24c4eef562f08f210c028adb34ef14e
  - >-
    Linux >= bc45449b1444611d68466ae7f45f235420d79019 <
    2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5
  - >-
    Linux >= bc45449b1444611d68466ae7f45f235420d79019 <
    694e7e6edf249723ca7d3ef77c2ca1badfc78dc4
  - >-
    Linux >= bc45449b1444611d68466ae7f45f235420d79019 <
    385c7af4e3b95d0769fd211831674e83b16a2ebf
  - Linux 3.5
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T11:17:09.147'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89982'
references:
  - url: 'https://git.kernel.org/stable/c/0927153f2abf48b6cc3e5f27063a17f7a8d47f38'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/385c7af4e3b95d0769fd211831674e83b16a2ebf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4c9bc46a2a4afb7a11c48d33bdf19febab431015'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4f42f70afd2447f3c82ca69d1e03466a75348ba9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/694e7e6edf249723ca7d3ef77c2ca1badfc78dc4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b580f062b24c4eef562f08f210c028adb34ef14e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-16T10:53:53.954Z'
epss: 0.0021
epssPercentile: 0.11557
---

## Overview

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

i2c: mux: Fix channel node leak on adapter add failure

i2c_mux_add_adapter() takes a reference to the Device Tree channel node
before registering the new adapter. If adapter registration fails, the
error path frees the private data without dropping that reference.

Release the channel node before freeing the private data.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.