CVE-2026-93284

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 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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxf86ad0ed620cb3c91ec7d5468e93ac68d727539d < e4331c6644db85bc6ceb470bd84bcf371b6dbfa6affected
LinuxLinuxf86ad0ed620cb3c91ec7d5468e93ac68d727539d < 9e6372ec2a3990662ae0a67f56ac0aee19848d5baffected
LinuxLinux6.17affected
LinuxLinux0 < 6.17unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.3-rc2 <= *unaffected

Weaknesses

References