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  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43130.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode\n\nCommit 4fc82cd907ac (\"iommu/vt-d: Don't issue ATS Invalidation\nrequest when device is disconnected\") relies on\npci_dev_is_disconnected() to skip ATS invalidation for\nsafely-removed devices, but it does not cover link-down caused\nby faults, which can still hard-lock the system.\n\nFor example, if a VM fails to connect to the PCIe device,\n\"virsh destroy\" is executed to release resources and isolate\nthe fault, but a hard-lockup occurs while releasing the group fd.\n\nCall Trace:\n qi_submit_sync\n qi_flush_dev_iotlb\n intel_pasid_tear_down_entry\n device_block_translation\n blocking_domain_attach_dev\n __iommu_attach_device\n __iommu_device_set_domain\n __iommu_group_set_domain_internal\n iommu_detach_group\n vfio_iommu_type1_detach_group\n vfio_group_detach_container\n vfio_group_fops_release\n __fput\n\nAlthough pci_device_is_present() is slower than\npci_dev_is_disconnected(), it still takes only ~70 µs on a\nConnectX-5 (8 GT/s, x2) and becomes even faster as PCIe speed\nand width increase.\n\nBesides, devtlb_invalidation_with_pasid() is called only in the\npaths below, which are far less frequent than memory map/unmap.\n\n1. mm-struct release\n2. {attach,release}_dev\n3. set/remove PASID\n4. dirty-tracking setup\n\nThe gain in system stability far outweighs the negligible cost\nof using pci_device_is_present() instead of pci_dev_is_disconnected()\nto decide when to skip ATS invalidation, especially under GDR\nhigh-load conditions.",
  "id": "CVE-2026-43130",
  "modified": "2026-07-08T05:37:58.110759917Z",
  "published": "2026-05-06T11:27:18.825Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/01aed2f1d7cb8fdf4c60c5bb4727608cb82b401d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0da6697e577023d8867c7beb2d16a22510e4eea9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10e60d87813989e20eac1f3eda30b3bae461e7f9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/581ce094d9eafb78ec4f9de77bd24b780c151236"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9813306610d0d718c863aaa70928bf57d7570ec0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9deaacc8dcaddb6ddc5b52e1e63b457450ec0f94"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2c78c69f8faf2885ea4ceee08c71ac738f401a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ead67d0378e90f419e385a43af29435242d80c12"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43130.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43130"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode"
}