---
id: CVE-2026-43195
title: 'drm/amdgpu: validate user queue size constraints'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu: validate user queue size constraints

  Add validation to ensure user queue sizes meet hardware requirements:
  - Size must be a power of two for efficient ring…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= fbf136b932358da1c65eb6fedd064a33a7a96aaa <
    cf2a37be899dc1b01f53bf1d0157330eaf3e3f55
  - >-
    Linux >= fbf136b932358da1c65eb6fedd064a33a7a96aaa <
    9f6cc309cd15922fe58cab2dfa1b5993ad31dec7
  - >-
    Linux >= fbf136b932358da1c65eb6fedd064a33a7a96aaa <
    8079b87c02e531cc91601f72ea8336dd2262fdf1
  - Linux 6.16
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T15:30:38.768325Z'
published: '2026-05-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T15:32:36.037Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-43195'
references:
  - url: 'https://git.kernel.org/stable/c/cf2a37be899dc1b01f53bf1d0157330eaf3e3f55'
  - url: 'https://git.kernel.org/stable/c/9f6cc309cd15922fe58cab2dfa1b5993ad31dec7'
  - url: 'https://git.kernel.org/stable/c/8079b87c02e531cc91601f72ea8336dd2262fdf1'
tags:
  - cve.org
epss: 0.00126
epssPercentile: 0.02324
ingestedAt: '2026-11-06T15:54:04.008Z'
---

## Overview

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

drm/amdgpu: validate user queue size constraints

Add validation to ensure user queue sizes meet hardware requirements:
- Size must be a power of two for efficient ring buffer wrapping
- Size must be at least AMDGPU_GPU_PAGE_SIZE to prevent undersized allocations

This prevents invalid configurations that could lead to GPU faults or
unexpected behavior.

## Affected

- `Linux >= fbf136b932358da1c65eb6fedd064a33a7a96aaa < cf2a37be899dc1b01f53bf1d0157330eaf3e3f55`
- `Linux >= fbf136b932358da1c65eb6fedd064a33a7a96aaa < 9f6cc309cd15922fe58cab2dfa1b5993ad31dec7`
- `Linux >= fbf136b932358da1c65eb6fedd064a33a7a96aaa < 8079b87c02e531cc91601f72ea8336dd2262fdf1`
- `Linux 6.16`

## Remediation

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