---
id: CVE-2026-90388
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iommu/dma: Check atomic pool allocation result directly

  The non-blocking, non-coherent allocation path uses dma_alloc_from_pool(),
  which returns the allocated page and…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iommu/dma: Check atomic pool allocation result directly

  The non-blocking, non-coherent allocation path uses dma_alloc_from_pool(),
  which returns the allocated page and…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 9420139f516d7fbc248ce17f35275cb005ed98ea <
    ac9cd0a669b8be5d178dbd471b0d68039dac58b5
  - >-
    Linux >= 9420139f516d7fbc248ce17f35275cb005ed98ea <
    db46cb9da83a507d86d2bb080bdb09c865da3d0a
  - >-
    Linux >= 9420139f516d7fbc248ce17f35275cb005ed98ea <
    d56c3f955b21e5764c1497e295a5b5d0b3a40470
  - >-
    Linux >= 9420139f516d7fbc248ce17f35275cb005ed98ea <
    06dffc96693083dda3412311406e558cf27f1574
  - >-
    Linux >= 9420139f516d7fbc248ce17f35275cb005ed98ea <
    a4ace31d732b657d774e31fb444c0c27d42c78e5
  - >-
    Linux >= 9420139f516d7fbc248ce17f35275cb005ed98ea <
    fb0b39287ba894dbdfac2901c51788b63f5c2291
  - >-
    Linux >= 9420139f516d7fbc248ce17f35275cb005ed98ea <
    8c486293ddd0af60991408149fc3e964ea888dc4
  - >-
    Linux >= 9420139f516d7fbc248ce17f35275cb005ed98ea <
    af95a0ebc0a0db0762be75f51eadf770bad01aaa
  - Linux 47184b9ddf184cc9a77cf441943a0fe9b7afa575
  - Linux >= 5.8.6 < 5.9
  - Linux 5.9
published: '2026-09-17'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T18:17:56.770'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90388'
references:
  - url: 'https://git.kernel.org/stable/c/06dffc96693083dda3412311406e558cf27f1574'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8c486293ddd0af60991408149fc3e964ea888dc4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a4ace31d732b657d774e31fb444c0c27d42c78e5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ac9cd0a669b8be5d178dbd471b0d68039dac58b5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/af95a0ebc0a0db0762be75f51eadf770bad01aaa'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d56c3f955b21e5764c1497e295a5b5d0b3a40470'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/db46cb9da83a507d86d2bb080bdb09c865da3d0a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fb0b39287ba894dbdfac2901c51788b63f5c2291'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00176
epssPercentile: 0.06275
ingestedAt: '2026-09-17T16:21:47.804Z'
---

## Overview

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

iommu/dma: Check atomic pool allocation result directly

The non-blocking, non-coherent allocation path uses dma_alloc_from_pool(),
which returns the allocated page and fills cpu_addr only on success.

Do not rely on cpu_addr to detect allocation failure in this path. Check
the returned page directly before using it for the IOMMU mapping.

## Remediation

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