Riskcovery

CVE-2026-93284

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

State
Published
Severity
8.8 High
Published
Sep 24, 2026
Updated
Oct 19, 2026
Reserved
Sep 17, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • f86ad0ed620cb3c91ec7d5468e93ac68d727539d to before e4331c6644db85bc6ceb470bd84bcf371b6dbfa6Affected
  • f86ad0ed620cb3c91ec7d5468e93ac68d727539d to before 415f5a755cec5164b149037bf294e270b78d36c6Affected
  • f86ad0ed620cb3c91ec7d5468e93ac68d727539d to before 9e6372ec2a3990662ae0a67f56ac0aee19848d5bAffected
LinuxLinux
  • 6.17Affected
  • before 6.17Not affected
  • 6.18.53 through 6.18.*Not affected
  • 7.2.9 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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