{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179"
            },
            {
              "fixed": "a770e62923090d7572f1f5a8507ae551d354a057"
            },
            {
              "fixed": "0dd61ba03d05187726ecdf9c0e2175a81b9b24f6"
            },
            {
              "fixed": "79235c8add5da4bf27a12f5a5dbb579f300c059e"
            },
            {
              "fixed": "46da5c3ea011e884028a91cf913db093920a915b"
            },
            {
              "fixed": "07cd2787cdf8942d24a1a3ef81aa89b526fb6381"
            },
            {
              "fixed": "a504b9f2797b739e0304d537e8aa4ce883ecce39"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.15.0"
            },
            {
              "fixed": "6.1.176"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.143"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.94"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.36"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53147.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Validate XDomain request packet size before type cast\n\ntb_xdp_handle_request() casts the received packet buffer to\nprotocol-specific structs without verifying that the allocation\nis large enough for the target type.  A peer can send a minimal\nXDomain packet that passes the generic header length check but is\nshorter than the struct accessed after the cast, causing out-of-\nbounds reads from the kmemdup allocation.\n\nPlumb the packet length through xdomain_request_work and validate\nit against the expected struct size before each cast.",
  "id": "CVE-2026-53147",
  "modified": "2026-07-08T05:36:56.137619903Z",
  "published": "2026-06-25T08:38:33.547Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07cd2787cdf8942d24a1a3ef81aa89b526fb6381"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0dd61ba03d05187726ecdf9c0e2175a81b9b24f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46da5c3ea011e884028a91cf913db093920a915b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/79235c8add5da4bf27a12f5a5dbb579f300c059e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a504b9f2797b739e0304d537e8aa4ce883ecce39"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a770e62923090d7572f1f5a8507ae551d354a057"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53147.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53147"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "thunderbolt: Validate XDomain request packet size before type cast"
}