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CVE-2026-90240 iommu/vt-d: Flush context cache with correct SID when tearing down aliases

🗓️ 17 Sep 2026 16:07:44Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 52 Views

Linux kernel iommu/vt-d stale context cache after alias teardown lets IOMMU walk freed memory.

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/iommu.c",
      "drivers/iommu/intel/iommu.h",
      "drivers/iommu/intel/pasid.c"
    ],
    "versions": [
      {
        "version": "f90584f4beb84211c4d21b319cc13f391fe9f3c2",
        "lessThan": "3eb6ad14ef359e426cff14942e220de101cdbe84",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f90584f4beb84211c4d21b319cc13f391fe9f3c2",
        "lessThan": "a803141597d61dc0511f7cd849625e17d042ca8a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f90584f4beb84211c4d21b319cc13f391fe9f3c2",
        "lessThan": "5baddf100b3be730912485648cbaae5e3a251923",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f90584f4beb84211c4d21b319cc13f391fe9f3c2",
        "lessThan": "c54e4ae971b98e8d650400137d332cee56c03f55",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/iommu/intel/iommu.c",
      "drivers/iommu/intel/iommu.h",
      "drivers/iommu/intel/pasid.c"
    ],
    "versions": [
      {
        "version": "6.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.11",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.114",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.52",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.6",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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21 Oct 2026 12:50Current
CVSS 3.18.8
EPSS0.00164
52