FKIE_CVE-2026-53053

Vulnerability from fkie_nvd - Published: 2026-06-24 17:17 - Updated: 2026-06-28 08:16
Severity
8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix clone_alias() to use the original device's devid Currently clone_alias() assumes first argument (pdev) is always the original device pointer. This function is called by pci_for_each_dma_alias() which based on topology decides to send original or alias device details in first argument. This meant that the source devid used to look up and copy the DTE may be incorrect, leading to wrong or stale DTE entries being propagated to alias device. Fix this by passing the original pdev as the opaque data argument to both the direct clone_alias() call and pci_for_each_dma_alias(). Inside clone_alias(), retrieve the original device from data and compute devid from it.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/20b3c566e2702e5d4d0545be8a97029a2eebcc0e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dae251ff11d2d2208a029f98923756831cefec46
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dbd76a537d8cb814e7f5b795ab21ecb7949c821d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/faad224fe0f0857a04ff2eb3c90f0de57f47d0f3
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/amd/iommu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "dbd76a537d8cb814e7f5b795ab21ecb7949c821d",
              "status": "affected",
              "version": "3332364e4ebc0581d133a334645a20fd13b580f1",
              "versionType": "git"
            },
            {
              "lessThan": "20b3c566e2702e5d4d0545be8a97029a2eebcc0e",
              "status": "affected",
              "version": "3332364e4ebc0581d133a334645a20fd13b580f1",
              "versionType": "git"
            },
            {
              "lessThan": "dae251ff11d2d2208a029f98923756831cefec46",
              "status": "affected",
              "version": "3332364e4ebc0581d133a334645a20fd13b580f1",
              "versionType": "git"
            },
            {
              "lessThan": "faad224fe0f0857a04ff2eb3c90f0de57f47d0f3",
              "status": "affected",
              "version": "3332364e4ebc0581d133a334645a20fd13b580f1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1f03a258f20f1699ede29bb40804074db9398a0d",
              "versionType": "git"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.17",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/amd/iommu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "lessThan": "5.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/amd: Fix clone_alias() to use the original device\u0027s devid\n\nCurrently clone_alias() assumes first argument (pdev) is always the\noriginal device pointer. This function is called by\npci_for_each_dma_alias() which based on topology decides to send\noriginal or alias device details in first argument.\n\nThis meant that the source devid used to look up and copy the DTE\nmay be incorrect, leading to wrong or stale DTE entries being\npropagated to alias device.\n\nFix this by passing the original pdev as the opaque data argument to\nboth the direct clone_alias() call and pci_for_each_dma_alias(). Inside\nclone_alias(), retrieve the original device from data and compute devid\nfrom it."
    }
  ],
  "id": "CVE-2026-53053",
  "lastModified": "2026-06-28T08:16:31.593",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-24T17:17:17.327",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/20b3c566e2702e5d4d0545be8a97029a2eebcc0e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dae251ff11d2d2208a029f98923756831cefec46"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dbd76a537d8cb814e7f5b795ab21ecb7949c821d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/faad224fe0f0857a04ff2eb3c90f0de57f47d0f3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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