---
id: CVE-2026-46311
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu/userq: fix access to stale wptr mapping

  Use drm_exec to take both locks i.e vm root bo and
  wptr_obj bo to access the mapping data properly.

  This fixes the …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu/userq: fix access to stale wptr mapping

  Use drm_exec to take both locks i.e vm root bo and
  wptr_obj bo to access the mapping data properly.

  This fixes 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'
cwe:
  - CWE-825
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.16, < 7.0.9'
  - linux_kernel = 7.1
patched:
  - linux_kernel 7.0.9
published: '2026-06-08'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:17:34.273'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46311'
references:
  - url: 'https://git.kernel.org/stable/c/2da62dbb4169e758c0b1a9378b39a373bf4fb111'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/336a9186f3a4b65bbd865d93936605ac8a1a3991'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6da7b1242da4455b11c24ce667d1cab1a348c8ea'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46311.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-46311'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2486470'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-46311'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46311'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2026060853-CVE-2026-46311-bf08@gregkh/T
  - url: 'https://access.redhat.com/errata/RHSA-2026:71602'
  - url: 'https://access.redhat.com/errata/RHSA-2026:71700'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00095
epssPercentile: 0.00627
scores:
  nvd: 7.8
  vendor: 7
  cna: 7.8
ingestedAt: '2026-07-08T12:51:00.719Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T15:21:50.965038Z'
---

## Overview

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

drm/amdgpu/userq: fix access to stale wptr mapping

Use drm_exec to take both locks i.e vm root bo and
wptr_obj bo to access the mapping data properly.

This fixes the security issue of unmap the wptr_obj while
a queue creation is in progress and passing other
bo at same address.

(cherry picked from commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)

## Affected

- `linux_kernel >= 6.16, < 7.0.9`
- `linux_kernel = 7.1`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.9`

## Vendor advisories

- **RHSA-2026:71602** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10), Red Hat Enterprise Linux Real Time for NFV (v. 10), Red Hat Enterprise Linux Real Time (v. 10) · released 2026-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:71602)
- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-09-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46311.json)
- **RHSA-2026:71700** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9), Red Hat Enterprise Linux Real Time (v. 9) · released 2026-09-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:71700)