---
id: CVE-2026-52953
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iommu/vt-d: Fix oops due to out of scope access

  Below oops triggers when kill QEMU process:

    Oops: general protection fault, probably for non-canonical address 0x7ff…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  iommu/vt-d: Fix oops due to out of scope access

  Below oops triggers when kill QEMU process:

    Oops: general protection fault, probably for non-canonical address 0x7ff…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'
published: '2026-06-24'
updated: '2026-07-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-52953'
references:
  - url: 'https://git.kernel.org/stable/c/1e659db468476733d217c1314c1e0d9244356d6c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/88397fad7914ee74a7880fa5ce01f9eb6bfe0743'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a6dea58d8625c06b9654c0555f101742481335c3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00169
epssPercentile: 0.05455
ingestedAt: '2026-07-11T13:13:24.845Z'
---

## Overview

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

iommu/vt-d: Fix oops due to out of scope access

Below oops triggers when kill QEMU process:

  Oops: general protection fault, probably for non-canonical address 0x7fffffff844eaaa7: 0000 [#1] SMP NOPTI
  Call Trace:
   <TASK>
   do_raw_spin_lock+0xaa/0xc0
   _raw_spin_lock_irqsave+0x21/0x40
   domain_remove_dev_pasid+0x52/0x160
   intel_nested_set_dev_pasid+0x1b9/0x1e0
   __iommu_set_group_pasid+0x56/0x120
   pci_dev_reset_iommu_done+0xe3/0x180
   pcie_flr+0x65/0x160
   __pci_reset_function_locked+0x5b/0x120
   vfio_pci_core_close_device+0x63/0xe0 [vfio_pci_core]
   vfio_df_close+0x4f/0xa0
   vfio_df_unbind_iommufd+0x2d/0x60
   vfio_device_fops_release+0x3e/0x40
   __fput+0xe5/0x2c0
   task_work_run+0x58/0xa0
   do_exit+0x2c8/0x600
   do_group_exit+0x2f/0xa0
   get_signal+0x863/0x8c0
   arch_do_signal_or_restart+0x24/0x100
   exit_to_user_mode_loop+0x87/0x380
   do_syscall_64+0x2ff/0x11e0
   entry_SYSCALL_64_after_hwframe+0x76/0x7e

The global static blocked domain is a dummy domain without corresponding
dmar_domain structure, accessing beyond iommu_domain structure triggers
oops easily. Fix it by return early in domain_remove_dev_pasid() like
identity domain.

## Remediation

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