What’s Vulnerable › Vulnerabilities

CVE-2026-93284: drm/pagemap: dma-unmap pages before handling migration errors

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-24 · updated 2026-10-19

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.

Affected products

• Linux kernel: 6.17 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/415f5a755cec5164b149037bf294e270b78d36c6
• https://git.kernel.org/stable/c/9e6372ec2a3990662ae0a67f56ac0aee19848d5b
• https://git.kernel.org/stable/c/e4331c6644db85bc6ceb470bd84bcf371b6dbfa6

Get alerted when CVE-2026-93284 or the next vulnerability affects your stack