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CVE-2026-43161 iommu/vt-d: Skip dev-iotlb flush for inaccessible PCIe device without scalable mode

🗓️ 06 May 2026 11:27:39Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 29 Views

CVE-2026-43161: IOMMU VT-d skips dev-iotlb flush for inaccessible PCIe devices without scalable mode to prevent ATS hang.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/iommu/intel/pasid.c"
    ],
    "versions": [
      {
        "version": "37764b952e1b39053defc7ebe5dcd8c4e3e78de9",
        "lessThan": "48b3f08e68b29a79527869cdde7298ca2a9b9646",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "37764b952e1b39053defc7ebe5dcd8c4e3e78de9",
        "lessThan": "e70d5feb10c5ba2bbf7ca400b8f39a2f82d653e8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "37764b952e1b39053defc7ebe5dcd8c4e3e78de9",
        "lessThan": "bc0490ad9edf5c6f98e39fbbee2877b85261a5ae",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "37764b952e1b39053defc7ebe5dcd8c4e3e78de9",
        "lessThan": "42662d19839f34735b718129ea200e3734b07e50",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "99301a53a1378f8863ac7850b9589f997bb0e125",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "948ec6d003280d49aca49b366aa5cb140f87434d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.12.19",
        "lessThan": "5.13",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.13.4",
        "lessThan": "5.14",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/iommu/intel/pasid.c"
    ],
    "versions": [
      {
        "version": "5.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.14",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.77",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.17",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.6",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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23 May 2026 16:06Current
EPSS0.00122
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