netfilter: xt_policy: fix strict mode inbound policy matching_CVE-2026-52920

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xt_policy: fix strict mode inbound policy matching\n\nmatch_policy_in() walks sec_path entries from the last transform to the\nfirst one, but strict policy matching needs to consume info->pol[] in\nthe same forward order as the rule layout.\n\nDerive the strict-match policy position from the number of transforms\nalready consumed so that multi-element inbound rules are matched\nconsistently.",
    "published": "2026-06-24T07:14:15.866Z",
    "modified": "2026-06-28T06:36:42.252Z",
    "type": "cve",
    "title": "netfilter: xt_policy: fix strict mode inbound policy matching",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/eb323f7b82d2e2f638de0cc2a177803eb20e0707\nhttps://git.kernel.org/stable/c/fc1c518bb1f054831ecabb32da9b8e1dff9699c6\nhttps://git.kernel.org/stable/c/f98b7f85e04b40e28b08c461ded0cc79f14f5509\nhttps://git.kernel.org/stable/c/82664d0f1ba25e4f9a71994954abae24c60f4067\nhttps://git.kernel.org/stable/c/b130a6eefa02bd4d475f2f059da8bcfb3e7d18d9\nhttps://git.kernel.org/stable/c/938867e870fb5471bb16f442aeac81326e05bf65\nhttps://git.kernel.org/stable/c/392cc1d8408b5665215c1e9290bbf0f92339b043\nhttps://git.kernel.org/stable/c/4b2b4d7d4e203c92db8966b163edfacb1f0e1e29",
    "id": "CVE-2026-52920",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux c4b885139203d37f76662c37ae645fe8e0f4e4e5\nLinux Linux c4b885139203d37f76662c37ae645fe8e0f4e4e5\nLinux Linux c4b885139203d37f76662c37ae645fe8e0f4e4e5\nLinux Linux c4b885139203d37f76662c37ae645fe8e0f4e4e5\nLinux Linux c4b885139203d37f76662c37ae645fe8e0f4e4e5\nLinux Linux c4b885139203d37f76662c37ae645fe8e0f4e4e5\nLinux Linux c4b885139203d37f76662c37ae645fe8e0f4e4e5\nLinux Linux c4b885139203d37f76662c37ae645fe8e0f4e4e5\nLinux Linux 2.6.17",
    "sourceHref": "",
    "cvss": {
        "score": 8.3,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/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": "",
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            "baseScore": 0,
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "c4b885139203d37f76662c37ae645fe8e0f4e4e5",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}