---
id: CVE-2026-68236
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: set new_stream to NULL after release

  In dm_update_crtc_state(), the skip_modeset path releases new_stream
  via dc_stream_release() but does not set the…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: set new_stream to NULL after release

  In dm_update_crtc_state(), the skip_modeset path releases new_stream
  via dc_stream_release() but does not set the…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <
    92b7c6e3a1546c6db868b07e93fa6fb950d1d3a0
  - >-
    Linux >= 9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <
    bf9c06c70f496f1ba4474caf95c69696c828340e
  - >-
    Linux >= 9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <
    01ba5b36898d6258f584269537cc49e7b05cf7c6
  - >-
    Linux >= 9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <
    ba8bf1dcbb44773e7a0fd13b42925c644e0d5e76
  - >-
    Linux >= 9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <
    5182e442e61397d446c36995b8f5676942d35b82
  - >-
    Linux >= 9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <
    679f23f0a3606afcef1ffabd72222f00a54ad9e3
  - >-
    Linux >= 9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <
    0676fecbb5242aa22c057e78326d6d6041db034c
  - >-
    Linux >= 9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <
    9fa26b9eed6195bf840f39ac183b9a6237548755
  - Linux 4.15
published: '2026-08-10'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:36.130'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68236'
references:
  - url: 'https://git.kernel.org/stable/c/01ba5b36898d6258f584269537cc49e7b05cf7c6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/0676fecbb5242aa22c057e78326d6d6041db034c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5182e442e61397d446c36995b8f5676942d35b82'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/679f23f0a3606afcef1ffabd72222f00a54ad9e3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/92b7c6e3a1546c6db868b07e93fa6fb950d1d3a0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9fa26b9eed6195bf840f39ac183b9a6237548755'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ba8bf1dcbb44773e7a0fd13b42925c644e0d5e76'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bf9c06c70f496f1ba4474caf95c69696c828340e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.0017
epssPercentile: 0.05741
ingestedAt: '2026-10-03T11:43:42.116Z'
---

## Overview

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

drm/amd/display: set new_stream to NULL after release

In dm_update_crtc_state(), the skip_modeset path releases new_stream
via dc_stream_release() but does not set the pointer to NULL.

If a later error (e.g., color management failure) triggers the fail
label, the error path calls dc_stream_release() again on the same
dangling pointer, causing a double release and potential use-after-free.

Fix this by setting new_stream to NULL after the initial release.

(cherry picked from commit 99f3af19073b3ddbfd96e789124cce12c4277b28)

## Remediation

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