---
id: CVE-2026-90428
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iommu/tegra241-cmdqv: Don't run the error ISR before probe sets up vintfs

  __tegra241_cmdqv_probe() requests the error IRQ before it has allocated the
  cmdqv->vintfs arr…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iommu/tegra241-cmdqv: Don't run the error ISR before probe sets up vintfs

  __tegra241_cmdqv_probe() requests the error IRQ before it has allocated the
  cmdqv->vintfs arr…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <
    b1605a56745f22670205f6561df5771bbbb62a99
  - >-
    Linux >= 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <
    2f627118b668659c6b195ac48beedb1bf8f53368
  - >-
    Linux >= 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <
    a168254ff8db08f2292be3d8fcbd37d2bb8c3d2d
  - >-
    Linux >= 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <
    5acd67ceb38debe2fbf70ea35e2dec9f7ab01bbd
  - Linux 6.12
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:47.643'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90428'
references:
  - url: 'https://git.kernel.org/stable/c/2f627118b668659c6b195ac48beedb1bf8f53368'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5acd67ceb38debe2fbf70ea35e2dec9f7ab01bbd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a168254ff8db08f2292be3d8fcbd37d2bb8c3d2d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b1605a56745f22670205f6561df5771bbbb62a99'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90428.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-90428'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2536774'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-90428'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90428'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90428.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-17T16:21:47.792Z'
epss: 0.00168
epssPercentile: 0.06045
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-824
---

## Overview

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

iommu/tegra241-cmdqv: Don't run the error ISR before probe sets up vintfs

__tegra241_cmdqv_probe() requests the error IRQ before it has allocated the
cmdqv->vintfs array and set cmdqv->num_vintfs. A CMDQV left enabled with a
latched error across a kexec fires the IRQ as soon as it is requested, and
tegra241_cmdqv_isr() then walks the uninitialized cmdqv->vintfs array.

Request the IRQ only after cmdqv->vintfs is allocated and zeroed, so that
a latched interrupt firing early runs the ISR against a valid array of NULL
slots that it safely skips.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90428.json)