---
id: CVE-2026-74461
title: 'i2c: imx: Cancel hrtimer before clearing slave pointer'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  i2c: imx: Cancel hrtimer before clearing slave pointer

  In i2c_imx_unreg_slave(), the slave pointer is set to NULL after
  disabling interrupts.  However, a pending inter…
severity: high
cvss: 8.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <
    e3da77bdb4015051656bb472c295656bbea03b6f
  - >-
    Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <
    470fe15fb3bb2eba6629be301ca7e991ee3cfb7e
  - >-
    Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <
    a8a1f9ac3d763e721586f15479ef9140b216ddf3
  - >-
    Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <
    753060f2b77ff2f386addbd3ecadb95b9f90cddd
  - >-
    Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <
    affd62f5719a78135b7441aa49c8cab3c3b5e838
  - >-
    Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <
    dab4762ee7f3fd0a01980d5407ba48d0261d3bff
  - >-
    Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <
    6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f
  - Linux 5.11
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T18:57:04.286724Z'
published: '2026-08-15'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T19:05:47.029Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-74461'
references:
  - url: 'https://git.kernel.org/stable/c/e3da77bdb4015051656bb472c295656bbea03b6f'
  - url: 'https://git.kernel.org/stable/c/470fe15fb3bb2eba6629be301ca7e991ee3cfb7e'
  - url: 'https://git.kernel.org/stable/c/a8a1f9ac3d763e721586f15479ef9140b216ddf3'
  - url: 'https://git.kernel.org/stable/c/753060f2b77ff2f386addbd3ecadb95b9f90cddd'
  - url: 'https://git.kernel.org/stable/c/affd62f5719a78135b7441aa49c8cab3c3b5e838'
  - url: 'https://git.kernel.org/stable/c/dab4762ee7f3fd0a01980d5407ba48d0261d3bff'
  - url: 'https://git.kernel.org/stable/c/6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f'
tags:
  - cve.org
epss: 0.00138
epssPercentile: 0.02829
ingestedAt: '2026-10-16T19:46:24.361Z'
---

## Overview

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

i2c: imx: Cancel hrtimer before clearing slave pointer

In i2c_imx_unreg_slave(), the slave pointer is set to NULL after
disabling interrupts.  However, a pending interrupt might already
have started the hrtimer (i2c_imx_slave_timeout) before the pointer
was cleared.  If the hrtimer fires after i2c_imx->slave is set to
NULL, the timer callback i2c_imx_slave_finish_op() will call
i2c_imx_slave_event() with a NULL slave pointer, which results in a
use-after-free / NULL pointer dereference.

Fix by canceling the hrtimer and waiting for it to complete after
disabling interrupts, before clearing the slave pointer.

## Affected

- `Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < e3da77bdb4015051656bb472c295656bbea03b6f`
- `Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < 470fe15fb3bb2eba6629be301ca7e991ee3cfb7e`
- `Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < a8a1f9ac3d763e721586f15479ef9140b216ddf3`
- `Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < 753060f2b77ff2f386addbd3ecadb95b9f90cddd`
- `Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < affd62f5719a78135b7441aa49c8cab3c3b5e838`
- `Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < dab4762ee7f3fd0a01980d5407ba48d0261d3bff`
- `Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < 6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f`
- `Linux 5.11`

## Remediation

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