{
  "cveId": "CVE-2026-52953",
  "url": "https://patchblox.com/security/cve/CVE-2026-52953",
  "summary": "CVE-2026-52953 is fixed in 34 products on 1 platform, first by ALAS2023-2026-1866, released June 22, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "iommu/vt-d: Fix oops due to out of scope access",
  "description": "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:    \u003CTASK\u003E    do_raw_spin_lock\u002B0xaa/0xc0    _raw_spin_lock_irqsave\u002B0x21/0x40    domain_remove_dev_pasid\u002B0x52/0x160    intel_nested_set_dev_pasid\u002B0x1b9/0x1e0    __iommu_set_group_pasid\u002B0x56/0x120    pci_dev_reset_iommu_done\u002B0xe3/0x180    pcie_flr\u002B0x65/0x160    __pci_reset_function_locked\u002B0x5b/0x120    vfio_pci_core_close_device\u002B0x63/0xe0 [vfio_pci_core]    vfio_df_close\u002B0x4f/0xa0    vfio_df_unbind_iommufd\u002B0x2d/0x60    vfio_device_fops_release\u002B0x3e/0x40    __fput\u002B0xe5/0x2c0    task_work_run\u002B0x58/0xa0    do_exit\u002B0x2c8/0x600    do_group_exit\u002B0x2f/0xa0    get_signal\u002B0x863/0x8c0    arch_do_signal_or_restart\u002B0x24/0x100    exit_to_user_mode_loop\u002B0x87/0x380    do_syscall_64\u002B0x2ff/0x11e0    entry_SYSCALL_64_after_hwframe\u002B0x76/0x7e  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.",
  "published": "2026-06-22T09:00:00Z",
  "severity": "Moderate",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
  "epss": 0.00134,
  "epssPercentile": 0.02903,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-52953",
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      "fixedVersion": "1:6.18.33-63.124.amzn2023",
      "fix": "ALAS2023-2026-1866",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1866",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.33-63.124.amzn2023",
      "fix": "ALAS2023-2026-1866",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1866",
      "released": "2026-06-22T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}