eventpoll: defer struct eventpoll free to RCU grace period_CVE-2026-43074

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\neventpoll: defer struct eventpoll free to RCU grace period\n\nIn certain situations, ep_free() in eventpoll.c will kfree the epi->ep\neventpoll struct while it still being used by another concurrent thread.\nDefer the kfree() to an RCU callback to prevent UAF.",
    "published": "2026-05-06T07:21:58.210Z",
    "modified": "2026-05-08T12:40:22.201Z",
    "type": "cve",
    "title": "eventpoll: defer struct eventpoll free to RCU grace period",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/a6566cd33f6f967a7651ebf2ce0dd31572e319cf\nhttps://git.kernel.org/stable/c/5b1173b165421561db29f30afc7e97d940a398a9\nhttps://git.kernel.org/stable/c/7e8083f5eeedab0f460063b9c2c14c9a4e71a427\nhttps://git.kernel.org/stable/c/ae0bb9c1fb7c2594519aeeb096cf2c3b7837b322\nhttps://git.kernel.org/stable/c/07712db80857d5d09ae08f3df85a708ecfc3b61f",
    "id": "CVE-2026-43074",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 58c9b016e12855286370dfb704c08498edbc857a\nLinux Linux 58c9b016e12855286370dfb704c08498edbc857a\nLinux Linux 58c9b016e12855286370dfb704c08498edbc857a\nLinux Linux 58c9b016e12855286370dfb704c08498edbc857a\nLinux Linux 58c9b016e12855286370dfb704c08498edbc857a\nLinux Linux 6.4",
    "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": "",
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            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "58c9b016e12855286370dfb704c08498edbc857a",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
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    "ai_score": 0
}