---
id: CVE-2026-98785
title: 'drm/amd/display: check dc_state_create_copy() for NULL in dm_suspend'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: check dc_state_create_copy() for NULL in dm_suspend

  dc_state_create_copy() can return NULL on allocation failure.
  dm_suspend() only conditionally skip…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 8092aa3ab8f7b737a34b71f91492c676a843043a <
    686baa1f4ec43b33e39e3d4b4a4539a91d17e883
  - >-
    Linux >= 8092aa3ab8f7b737a34b71f91492c676a843043a <
    197946faa1b7968046ba475ae2f266847c6f51ed
  - >-
    Linux >= 8092aa3ab8f7b737a34b71f91492c676a843043a <
    7283b78ca07ce491984a63f6288f3f8de5bdcb22
  - >-
    Linux >= 8092aa3ab8f7b737a34b71f91492c676a843043a <
    015e72cde567d2450e282c2790773463156b2d0a
  - Linux ea000e4b4ee5363997715531cb3d024b4e5d561c
  - Linux d0b8b23b9c2ebec693a36fea518d8f13493ad655
  - Linux 83c7f509ef087041604e9572938f82e18b724c9d
  - Linux 4cc2a94d96caeb3c975acdae7351c2f997c32175
  - Linux 1686675405d07f35eae7ff3d13a530034b899df2
  - Linux >= 5.10.258 < 5.11
  - Linux >= 5.15.165 < 5.16
  - Linux >= 6.1.105 < 6.2
  - Linux >= 6.6.46 < 6.7
  - Linux >= 6.10.5 < 6.11
  - Linux 6.11
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T15:48:22.111Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98785'
references:
  - url: 'https://git.kernel.org/stable/c/686baa1f4ec43b33e39e3d4b4a4539a91d17e883'
  - url: 'https://git.kernel.org/stable/c/197946faa1b7968046ba475ae2f266847c6f51ed'
  - url: 'https://git.kernel.org/stable/c/7283b78ca07ce491984a63f6288f3f8de5bdcb22'
  - url: 'https://git.kernel.org/stable/c/015e72cde567d2450e282c2790773463156b2d0a'
tags:
  - cve.org
ingestedAt: '2026-10-18T16:47:32.488Z'
---

## Overview

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

drm/amd/display: check dc_state_create_copy() for NULL in dm_suspend

dc_state_create_copy() can return NULL on allocation failure.
dm_suspend() only conditionally skips dm_gpureset_toggle_interrupts()
and continues execution, returning success.  dm_resume() then
dereferences the NULL cached_dc_state in link_enc_cfg_copy() and the
following dc_state->stream_count loop, crashing during GPU reset
recovery.

Return -ENOMEM immediately if the copy fails, so the caller aborts
suspend instead of leaving a NULL cached state for resume.

(cherry picked from commit 84b6d7932fdd2857795a257f9f258562a3cddcab)

## Affected

- `Linux >= 8092aa3ab8f7b737a34b71f91492c676a843043a < 686baa1f4ec43b33e39e3d4b4a4539a91d17e883`
- `Linux >= 8092aa3ab8f7b737a34b71f91492c676a843043a < 197946faa1b7968046ba475ae2f266847c6f51ed`
- `Linux >= 8092aa3ab8f7b737a34b71f91492c676a843043a < 7283b78ca07ce491984a63f6288f3f8de5bdcb22`
- `Linux >= 8092aa3ab8f7b737a34b71f91492c676a843043a < 015e72cde567d2450e282c2790773463156b2d0a`
- `Linux ea000e4b4ee5363997715531cb3d024b4e5d561c`
- `Linux d0b8b23b9c2ebec693a36fea518d8f13493ad655`
- `Linux 83c7f509ef087041604e9572938f82e18b724c9d`
- `Linux 4cc2a94d96caeb3c975acdae7351c2f997c32175`
- `Linux 1686675405d07f35eae7ff3d13a530034b899df2`
- `Linux >= 5.10.258 < 5.11`
- `Linux >= 5.15.165 < 5.16`
- `Linux >= 6.1.105 < 6.2`
- `Linux >= 6.6.46 < 6.7`
- `Linux >= 6.10.5 < 6.11`
- `Linux 6.11`

## Remediation

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