---
id: CVE-2025-71301
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/tests: shmem: Hold reservation lock around vmap/vunmap

  Acquire and release the GEM object's reservation lock around vmap and
  vunmap operations
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/tests: shmem: Hold reservation lock around vmap/vunmap

  Acquire and release the GEM object's reservation lock around vmap and
  vunmap operations. The tests use vmap_…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.16, < 6.18.16'
  - 'linux_kernel >= 6.19, < 6.19.6'
patched:
  - linux_kernel 6.19.6
published: '2026-05-08'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-71301'
references:
  - url: 'https://git.kernel.org/stable/c/6b953d92f2f29e74b125617c6f00300fa1bed97e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cda83b099f117f2a28a77bf467af934cb39e49cf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e7b7022f11d3cf281c726117478696b83681bf11'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00121
epssPercentile: 0.01731
ingestedAt: '2026-10-14T13:30:58.491Z'
---

## Overview

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

drm/tests: shmem: Hold reservation lock around vmap/vunmap

Acquire and release the GEM object's reservation lock around vmap and
vunmap operations. The tests use vmap_locked, which led to errors such
as show below.

[  122.292030] WARNING: CPU: 3 PID: 1413 at drivers/gpu/drm/drm_gem_shmem_helper.c:390 drm_gem_shmem_vmap_locked+0x3a3/0x6f0

[  122.468066] WARNING: CPU: 3 PID: 1413 at drivers/gpu/drm/drm_gem_shmem_helper.c:293 drm_gem_shmem_pin_locked+0x1fe/0x350

[  122.563504] WARNING: CPU: 3 PID: 1413 at drivers/gpu/drm/drm_gem_shmem_helper.c:234 drm_gem_shmem_get_pages_locked+0x23c/0x370

[  122.662248] WARNING: CPU: 2 PID: 1413 at drivers/gpu/drm/drm_gem_shmem_helper.c:452 drm_gem_shmem_vunmap_locked+0x101/0x330

Only export the new vmap/vunmap helpers for Kunit tests. These are
not interfaces for regular drivers.

## Affected

- `linux_kernel >= 6.16, < 6.18.16`
- `linux_kernel >= 6.19, < 6.19.6`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.19.6`