netfilter: require Ethernet MAC header before using eth_hdr()_CVE-2026-53131

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: require Ethernet MAC header before using eth_hdr()\n\n`ip6t_eui64`, `xt_mac`, the `bitmap:ip,mac`, `hash:ip,mac`, and\n`hash:mac` ipset types, and `nf_log_syslog` access `eth_hdr(skb)`\nafter either assuming that the skb is associated with an Ethernet\ndevice or checking only that the `ETH_HLEN` bytes at\n`skb_mac_header(skb)` lie between `skb->head` and `skb->data`.\n\nMake these paths first verify that the skb is associated with an\nEthernet device, that the MAC header was set, and that it spans at\nleast a full Ethernet header before accessing `eth_hdr(skb)`.",
    "published": "2026-06-25T08:38:20.489Z",
    "modified": "2026-06-28T06:39:24.582Z",
    "type": "cve",
    "title": "netfilter: require Ethernet MAC header before using eth_hdr()",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/4435888e1bf139d2bfe5911643d4217382136743\nhttps://git.kernel.org/stable/c/063f43361e884acd7300790e90194430275d0d0c\nhttps://git.kernel.org/stable/c/726abf97566867f808fec9d8a408eb9698bd570a\nhttps://git.kernel.org/stable/c/367abcacc13a8e2e7624408b7f593bd1e60e49d9\nhttps://git.kernel.org/stable/c/5d634afb8b83b49de562792fd0d047416a43bd4d\nhttps://git.kernel.org/stable/c/cea435ea7e868ea6fdf039bc4f2090c1d829b556\nhttps://git.kernel.org/stable/c/62443dc21114c0bbc476fa62973db89743f2f137",
    "id": "CVE-2026-53131",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\nLinux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\nLinux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\nLinux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\nLinux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\nLinux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\nLinux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\nLinux Linux 0\nLinux Linux 0\nLinux Linux 0\nLinux Linux 0\nLinux Linux 0\nLinux Linux 0",
    "sourceHref": "",
    "cvss": {
        "score": 9.4,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
    "vendor": "Linux",
    "ai_description": "A vulnerability in the Linux kernel's netfilter component allows for potential unauthorized access due to insufficient verification of Ethernet MAC headers before using eth_hdr().",
    "ai_severity": "Critical",
    "ai_vendor": "The Linux Foundation",
    "ai_product": "Linux Kernel",
    "ai_version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
    "ai_score": 9.4
}