CVE-2026-52953 (GCVE-0-2026-52953)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:28 – Updated: 2026-08-05 12:32
VLAI
Title
iommu/vt-d: Fix oops due to out of scope access
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 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.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7d0c9da6c1509664d96488042bacc02308ca33b2 , < 88397fad7914ee74a7880fa5ce01f9eb6bfe0743 (git)
Affected: 7d0c9da6c1509664d96488042bacc02308ca33b2 , < 1e659db468476733d217c1314c1e0d9244356d6c (git)
Affected: 7d0c9da6c1509664d96488042bacc02308ca33b2 , < a6dea58d8625c06b9654c0555f101742481335c3 (git)
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Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Fix oops due to out of scope access\n\nBelow oops triggers when kill QEMU process:\n\n  Oops: general protection fault, probably for non-canonical address 0x7fffffff844eaaa7: 0000 [#1] SMP NOPTI\n  Call Trace:\n   \u003cTASK\u003e\n   do_raw_spin_lock+0xaa/0xc0\n   _raw_spin_lock_irqsave+0x21/0x40\n   domain_remove_dev_pasid+0x52/0x160\n   intel_nested_set_dev_pasid+0x1b9/0x1e0\n   __iommu_set_group_pasid+0x56/0x120\n   pci_dev_reset_iommu_done+0xe3/0x180\n   pcie_flr+0x65/0x160\n   __pci_reset_function_locked+0x5b/0x120\n   vfio_pci_core_close_device+0x63/0xe0 [vfio_pci_core]\n   vfio_df_close+0x4f/0xa0\n   vfio_df_unbind_iommufd+0x2d/0x60\n   vfio_device_fops_release+0x3e/0x40\n   __fput+0xe5/0x2c0\n   task_work_run+0x58/0xa0\n   do_exit+0x2c8/0x600\n   do_group_exit+0x2f/0xa0\n   get_signal+0x863/0x8c0\n   arch_do_signal_or_restart+0x24/0x100\n   exit_to_user_mode_loop+0x87/0x380\n   do_syscall_64+0x2ff/0x11e0\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nThe global static blocked domain is a dummy domain without corresponding\ndmar_domain structure, accessing beyond iommu_domain structure triggers\noops easily. Fix it by return early in domain_remove_dev_pasid() like\nidentity domain."
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    "dateReserved": "2026-06-09T07:44:35.372Z",
    "dateUpdated": "2026-08-05T12:32:03.109Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
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      "current_release_date": "2026-08-05T14:40:39+00:00",
      "cve": "CVE-2026-52953",
      "id": "CVE-2026-52953",
      "initial_release_date": "2026-06-24T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iommu/vt-d: Fix oops due to out of scope access",
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      "cve": "CVE-2026-52953",
      "id": "CVE-2026-52953",
      "initial_release_date": "2026-06-26T02:14:51Z",
      "product_status:known_not_affected": "236",
      "product_status:recommended": "98",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-52953",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-52953.json",
      "version": "4"
    }
  }
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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