# CVE-2026-93284: linux: In the Linux kernel, the following vulnerability has been resolved:  drm/pagemap: dma-unmap pages before handling mig...

CVE-2026-93284 is fixed in linux on 1 platform by DEBIAN-CVE-2026-93284 (version 7.2.9-1), released October 9, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-93284
- Priority: High
- CVSS: 8.8 (high)
- EPSS: 0.0013
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 24, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.2.9-1 | [DEBIAN-CVE-2026-93284](https://patchblox.com/security/data/fix/linux/debian-cve-2026-93284.md) | Oct 9, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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