---
id: CVE-2026-93068
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: Fix DM I2C teardown race

  DM I2C adapters can remain visible to userspace while DM teardown is
  already in progress
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: Fix DM I2C teardown race

  DM I2C adapters can remain visible to userspace while DM teardown is
  already in progress. A concurrent i2c-dev transfer may t…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 <
    8ee385305e8902fa6fbfd66b5a112238292567b6
  - >-
    Linux >= 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 <
    6970ec944567f109ac4240f9aea58158ee8a18cd
  - >-
    Linux >= 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 <
    e4ae30a12aa95942814957d8bc1ce7366a7107d7
  - Linux 6.18
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:18:00.647'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93068'
references:
  - url: 'https://git.kernel.org/stable/c/6970ec944567f109ac4240f9aea58158ee8a18cd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8ee385305e8902fa6fbfd66b5a112238292567b6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e4ae30a12aa95942814957d8bc1ce7366a7107d7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.765Z'
epss: 0.00206
epssPercentile: 0.09442
---

## Overview

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

drm/amd/display: Fix DM I2C teardown race

DM I2C adapters can remain visible to userspace while DM teardown is
already in progress. A concurrent i2c-dev transfer may then enter
amdgpu_dm_i2c_xfer() after the backing DM state has been torn down,
leading to a NULL pointer dereference.

Create a devres group around the DM I2C adapter lifetime and release it
at the start of dm_hw_fini(), before HPD, IRQ, and DM state are torn
down. This removes the I2C adapters first and waits for in-flight users
to drain before the structures used by amdgpu_dm_i2c_xfer() disappear.

This fixes a teardown ordering race seen during device removal:

BUG: kernel NULL pointer dereference
RIP: amdgpu_dm_i2c_xfer+0x122/0x1c0 [amdgpu]
Call Trace:
__i2c_transfer
i2c_transfer
i2cdev_ioctl_rdwr

## Remediation

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