FKIE_CVE-2026-53146

Vulnerability from fkie_nvd - Published: 2026-06-25 09:16 - Updated: 2026-06-30 14:44
Severity
7.1 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Summary
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Limit XDomain response copy to actual frame size tb_xdomain_copy() copies req->response_size bytes from the received packet buffer regardless of the actual frame size. When a short response arrives, this reads past the valid frame data in the DMA pool buffer into stale contents from previous transactions. Use the minimum of frame size and expected response size for the copy length.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/033dfa63bf6be2653441a1dccae4a8313a91bb9d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8eb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7720654b4842bcdfeb64bc002f6186041849e1e7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b5daa920f44cb582272fc9bfaeb67408776cbaef
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c55da494dfb445fb28df3a9d293c2be6a299cd01
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc261397295b8ad0654cec747b0ec25ea0011995
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/thunderbolt/xdomain.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c55da494dfb445fb28df3a9d293c2be6a299cd01",
              "status": "affected",
              "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
              "versionType": "git"
            },
            {
              "lessThan": "7720654b4842bcdfeb64bc002f6186041849e1e7",
              "status": "affected",
              "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
              "versionType": "git"
            },
            {
              "lessThan": "033dfa63bf6be2653441a1dccae4a8313a91bb9d",
              "status": "affected",
              "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
              "versionType": "git"
            },
            {
              "lessThan": "fc261397295b8ad0654cec747b0ec25ea0011995",
              "status": "affected",
              "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
              "versionType": "git"
            },
            {
              "lessThan": "a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cb",
              "status": "affected",
              "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
              "versionType": "git"
            },
            {
              "lessThan": "b5daa920f44cb582272fc9bfaeb67408776cbaef",
              "status": "affected",
              "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
              "versionType": "git"
            },
            {
              "lessThan": "b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4",
              "status": "affected",
              "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
              "versionType": "git"
            },
            {
              "lessThan": "4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8eb",
              "status": "affected",
              "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/thunderbolt/xdomain.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "lessThan": "4.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "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\nthunderbolt: Limit XDomain response copy to actual frame size\n\ntb_xdomain_copy() copies req-\u003eresponse_size bytes from the received\npacket buffer regardless of the actual frame size.  When a short\nresponse arrives, this reads past the valid frame data in the DMA\npool buffer into stale contents from previous transactions.\n\nUse the minimum of frame size and expected response size for the\ncopy length."
    }
  ],
  "id": "CVE-2026-53146",
  "lastModified": "2026-06-30T14:44:27.313",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.2,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-25T09:16:31.923",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/033dfa63bf6be2653441a1dccae4a8313a91bb9d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8eb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7720654b4842bcdfeb64bc002f6186041849e1e7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b5daa920f44cb582272fc9bfaeb67408776cbaef"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c55da494dfb445fb28df3a9d293c2be6a299cd01"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fc261397295b8ad0654cec747b0ec25ea0011995"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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