thunderbolt: Validate XDomain request packet size before type cast_CVE-2026-53147

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-06-25T08:38:33.547Z",
    "modified": "2026-06-28T06:39:32.188Z",
    "type": "cve",
    "title": "thunderbolt: Validate XDomain request packet size before type cast",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/a770e62923090d7572f1f5a8507ae551d354a057\nhttps://git.kernel.org/stable/c/0dd61ba03d05187726ecdf9c0e2175a81b9b24f6\nhttps://git.kernel.org/stable/c/79235c8add5da4bf27a12f5a5dbb579f300c059e\nhttps://git.kernel.org/stable/c/46da5c3ea011e884028a91cf913db093920a915b\nhttps://git.kernel.org/stable/c/07cd2787cdf8942d24a1a3ef81aa89b526fb6381\nhttps://git.kernel.org/stable/c/a504b9f2797b739e0304d537e8aa4ce883ecce39",
    "id": "CVE-2026-53147",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux cdae7c07e3e3509eaabc18c1640a55dc5b99c179\nLinux Linux cdae7c07e3e3509eaabc18c1640a55dc5b99c179\nLinux Linux cdae7c07e3e3509eaabc18c1640a55dc5b99c179\nLinux Linux cdae7c07e3e3509eaabc18c1640a55dc5b99c179\nLinux Linux cdae7c07e3e3509eaabc18c1640a55dc5b99c179\nLinux Linux cdae7c07e3e3509eaabc18c1640a55dc5b99c179\nLinux Linux 4.15",
    "sourceHref": "",
    "cvss": {
        "score": 8.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}