---
id: CVE-2026-93284
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/pagemap: dma-unmap pages before handling migration errors

  drm_pagemap_migrate_unmap_pages() relies on the pages array to determine
  which pages require DMA unmappin…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/pagemap: dma-unmap pages before handling migration errors

  drm_pagemap_migrate_unmap_pages() relies on the pages array to determine
  which pages require DMA unmappin…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= f86ad0ed620cb3c91ec7d5468e93ac68d727539d <
    e4331c6644db85bc6ceb470bd84bcf371b6dbfa6
  - >-
    Linux >= f86ad0ed620cb3c91ec7d5468e93ac68d727539d <
    415f5a755cec5164b149037bf294e270b78d36c6
  - >-
    Linux >= f86ad0ed620cb3c91ec7d5468e93ac68d727539d <
    9e6372ec2a3990662ae0a67f56ac0aee19848d5b
  - Linux 6.17
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:46.897'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93284'
references:
  - url: 'https://git.kernel.org/stable/c/415f5a755cec5164b149037bf294e270b78d36c6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9e6372ec2a3990662ae0a67f56ac0aee19848d5b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e4331c6644db85bc6ceb470bd84bcf371b6dbfa6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93284.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93284'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540525'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93284'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93284'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93284.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00127
epssPercentile: 0.02376
ingestedAt: '2026-09-24T16:47:15.906Z'
cwe:
  - CWE-459
scores:
  nvd: 8.8
  vendor: 5.5
  cna: 8.8
---

## Overview

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

drm/pagemap: dma-unmap pages before handling migration errors

drm_pagemap_migrate_unmap_pages() relies on the pages array to determine
which pages require DMA unmapping. However,
drm_pagemap_migration_unlock_put_pages() clears the array as part of its
cleanup, leaving drm_pagemap_migrate_unmap_pages() with no valid page
information if it is called afterward.

Call drm_pagemap_migrate_unmap_pages() before
drm_pagemap_migration_unlock_put_pages() so the pages array remains
valid during DMA unmapping.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93284.json)