netfilter: nf_queue: hold bridge skb->dev while queued_CVE-2026-52912

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_queue: hold bridge skb->dev while queued\n\nbr_pass_frame_up() rewrites skb->dev from the ingress port to the bridge\nmaster before queueing bridge LOCAL_IN packets. NFQUEUE only holds\nreferences on state.in/out and bridge physdevs, so a queued bridge\npacket can retain a freed bridge master in skb->dev until reinjection.\n\nWhen the verdict is reinjected later, br_netif_receive_skb() re-enters\nthe receive path with skb->dev still pointing at the freed bridge master,\ntriggering a use-after-free.\n\nStore skb->dev in the queue entry, hold a reference on it for the queue\nlifetime, and use the saved device when dropping queued packets during\nNETDEV_DOWN handling.",
    "published": "2026-06-24T07:14:10.583Z",
    "modified": "2026-06-28T06:36:30.468Z",
    "type": "cve",
    "title": "netfilter: nf_queue: hold bridge skb->dev while queued",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/950d809f154dca04e5fbe5d3c8b9c5e44769cd57\nhttps://git.kernel.org/stable/c/a698ac8ab2561cf575d2d9f34095032651dd952e\nhttps://git.kernel.org/stable/c/19924bdd8a45ebc72a7b84c57fd63057d1dc75ac\nhttps://git.kernel.org/stable/c/1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be\nhttps://git.kernel.org/stable/c/3823c27099cfe2482299065814adbaa771be9644\nhttps://git.kernel.org/stable/c/15d464265120ab9818bd673af301deee09bedab2\nhttps://git.kernel.org/stable/c/3fb0f5c0f64162a8c3f25616a4f1e340b921737f\nhttps://git.kernel.org/stable/c/e196115ec330a18de415bdb9f5071aa9f08e53ce",
    "id": "CVE-2026-52912",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux ac28634456867b23b95faccba7997a62ec430603\nLinux Linux ac28634456867b23b95faccba7997a62ec430603\nLinux Linux ac28634456867b23b95faccba7997a62ec430603\nLinux Linux ac28634456867b23b95faccba7997a62ec430603\nLinux Linux ac28634456867b23b95faccba7997a62ec430603\nLinux Linux ac28634456867b23b95faccba7997a62ec430603\nLinux Linux ac28634456867b23b95faccba7997a62ec430603\nLinux Linux ac28634456867b23b95faccba7997a62ec430603\nLinux Linux 4.7",
    "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": "ac28634456867b23b95faccba7997a62ec430603",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}