bpf: Fix a potential use-after-free of BTF object_CVE-2026-45951

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix a potential use-after-free of BTF object\n\nRefcounting in the check_pseudo_btf_id() function is incorrect:\nthe __check_pseudo_btf_id() function might get called with a zero\nrefcounted btf. Fix this, and patch related code accordingly.\n\nv3: rephrase a comment (AI)\nv2: fix a refcount leak introduced in v1 (AI)",
    "published": "2026-05-27T12:18:07.255Z",
    "modified": "2026-05-30T10:46:12.863Z",
    "type": "cve",
    "title": "bpf: Fix a potential use-after-free of BTF object",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/eac65c272f3b49021a843cba5107d63627395e0e\nhttps://git.kernel.org/stable/c/9ff46ffeecdb1802d6e26183177935b948a12e7f\nhttps://git.kernel.org/stable/c/ccd2d799ed4467c07f5ee18c2f5c59bcc990822c",
    "id": "CVE-2026-45951",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 76145f7255326761dafb76721a785799d8a00d5f\nLinux Linux 76145f7255326761dafb76721a785799d8a00d5f\nLinux Linux 76145f7255326761dafb76721a785799d8a00d5f\nLinux Linux 6.14",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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": "76145f7255326761dafb76721a785799d8a00d5f",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}