---
id: CVE-2026-90424
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iommu/tegra241-cmdqv: Fix VINTF0 leak on the init-failure path

  tegra241_cmdqv_init_structures() allocates VINTF0 with kzalloc_obj(), inits
  it, and preallocates its log…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iommu/tegra241-cmdqv: Fix VINTF0 leak on the init-failure path

  tegra241_cmdqv_init_structures() allocates VINTF0 with kzalloc_obj(), inits
  it, and preallocates its log…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <
    1d2271d7df5230e4ce36bdafd17524bd004f3b3f
  - >-
    Linux >= 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <
    417190bde0fda4ee857999a722ca90163fbec587
  - >-
    Linux >= 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <
    f40f3144477314b489e4bc209c06cb51679fe82b
  - Linux 6.12
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:47.060'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90424'
references:
  - url: 'https://git.kernel.org/stable/c/1d2271d7df5230e4ce36bdafd17524bd004f3b3f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/417190bde0fda4ee857999a722ca90163fbec587'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f40f3144477314b489e4bc209c06cb51679fe82b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.793Z'
epss: 0.00206
epssPercentile: 0.09489
---

## Overview

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

iommu/tegra241-cmdqv: Fix VINTF0 leak on the init-failure path

tegra241_cmdqv_init_structures() allocates VINTF0 with kzalloc_obj(), inits
it, and preallocates its logical VCMDQs. Two of its error paths leak.

When tegra241_cmdqv_init_vintf() fails it returns before VINTF0 reaches the
cmdqv->vintfs[] array, so the devres unwind on probe failure cannot reach
it; free it directly there.

A later VCMDQ preallocation failure instead leaves VINTF0 published, and so
this time the unwind does reach tegra241_cmdqv_remove_vintf(), which then
frees it from vintf->hyp_own. But tegra241_vintf_hw_init() sets that flag
only afterward, from a HW read-back, so the still-uninited VINTF0 reads as
guest-owned and leaks, with mutex_destroy() and ida_destroy() run on fields
it never set up.

Decide ownership from vintf->idx instead, the index assigned when its id is
allocated: idx 0 is the kernel-owned VINTF0, while idx >= 1 marks a guest
VINTF. So the in-kernel free decision in tegra241_cmdqv_remove_vintf() and
tegra241_vintf_free_lvcmdq() now keys on idx too, and hyp_own stays a pure
HW-readback state.

## Remediation

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