---
id: CVE-2026-72452
title: 'drm/i915: clear CRTC color blob pointers after dropping refs'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/i915: clear CRTC color blob pointers after dropping refs

  intel_crtc_put_color_blobs() drops the CRTC color blob references, but
  leaves the corresponding pointers u…
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'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 9a6cbb4a5c168e94a69a0cbec572b3738205232b <
    164afa1a3af8e8c91b4a6d5fd7b79a44ec70abf0
  - >-
    Linux >= 8581466b827fdf0300a3e2e93900ddefd8240053 <
    2024940522ef451098c940ab0b82d647de5e5d9b
  - >-
    Linux >= 77fcf58df15edcf3f5b5421f24814fb72796def9 <
    ac554ad943610031a25795d6ef71316f6164c136
  - >-
    Linux >= 77fcf58df15edcf3f5b5421f24814fb72796def9 <
    31f077088e0faae6be8377741f356dea1b94ba46
  - Linux 674fc4a50b667be65c947d81af63a9367deafb5c
  - Linux >= 6.12.80 < 6.12.97
  - Linux >= 6.18.21 < 6.18.40
  - Linux >= 6.19.11 < 6.20
  - Linux 7.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T18:50:17.652140Z'
published: '2026-08-15'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T18:55:24.968Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-72452'
references:
  - url: 'https://git.kernel.org/stable/c/164afa1a3af8e8c91b4a6d5fd7b79a44ec70abf0'
  - url: 'https://git.kernel.org/stable/c/2024940522ef451098c940ab0b82d647de5e5d9b'
  - url: 'https://git.kernel.org/stable/c/ac554ad943610031a25795d6ef71316f6164c136'
  - url: 'https://git.kernel.org/stable/c/31f077088e0faae6be8377741f356dea1b94ba46'
tags:
  - cve.org
epss: 0.00175
epssPercentile: 0.06562
ingestedAt: '2026-10-16T19:46:24.394Z'
---

## Overview

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

drm/i915: clear CRTC color blob pointers after dropping refs

intel_crtc_put_color_blobs() drops the CRTC color blob references, but
leaves the corresponding pointers unchanged.

This can matter in intel_crtc_prepare_cleared_state(), which frees the
old CRTC hw state before calling intel_dp_tunnel_atomic_clear_stream_bw().
The latter can fail while looking up the DP tunnel group state, for
example with -EDEADLK.

If that happens, the function returns without completing the cleared
state preparation. The failed atomic state will then be cleared by the
atomic core and intel_crtc_free_hw_state() can be called again for the
same state, dropping the same blob references again.

Clear the blob pointers after dropping the references so repeated cleanup
of the same CRTC hw state is safe.

(cherry picked from commit d5005addb5f68e8a0edce249506757bdc9e3d8c8)

## Affected

- `Linux >= 9a6cbb4a5c168e94a69a0cbec572b3738205232b < 164afa1a3af8e8c91b4a6d5fd7b79a44ec70abf0`
- `Linux >= 8581466b827fdf0300a3e2e93900ddefd8240053 < 2024940522ef451098c940ab0b82d647de5e5d9b`
- `Linux >= 77fcf58df15edcf3f5b5421f24814fb72796def9 < ac554ad943610031a25795d6ef71316f6164c136`
- `Linux >= 77fcf58df15edcf3f5b5421f24814fb72796def9 < 31f077088e0faae6be8377741f356dea1b94ba46`
- `Linux 674fc4a50b667be65c947d81af63a9367deafb5c`
- `Linux >= 6.12.80 < 6.12.97`
- `Linux >= 6.18.21 < 6.18.40`
- `Linux >= 6.19.11 < 6.20`
- `Linux 7.0`

## Remediation

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