net/sched: act_gate: snapshot parameters with RCU on replace_CVE-2026-23245

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_gate: snapshot parameters with RCU on replace\n\nThe gate action can be replaced while the hrtimer callback or dump path is\nwalking the schedule list.\n\nConvert the parameters to an RCU-protected snapshot and swap updates under\ntcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits\nthe entry list, preserve the existing schedule so the effective state is\nunchanged.",
    "published": "2026-03-18T10:05:07.406Z",
    "modified": "2026-04-02T14:43:57.805Z",
    "type": "cve",
    "title": "net/sched: act_gate: snapshot parameters with RCU on replace",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/8b1251bbf0f10ac745ed74bad4d3b433caa1eeae\nhttps://git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432\nhttps://git.kernel.org/stable/c/035d0d09d5ab3ed3e93d18cde2b562a6719eea23\nhttps://git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2\nhttps://git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351\nhttps://git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c",
    "id": "CVE-2026-23245",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux a51c328df3106663879645680609eb49b3ff6444\nLinux Linux a51c328df3106663879645680609eb49b3ff6444\nLinux Linux a51c328df3106663879645680609eb49b3ff6444\nLinux Linux a51c328df3106663879645680609eb49b3ff6444\nLinux Linux a51c328df3106663879645680609eb49b3ff6444\nLinux Linux a51c328df3106663879645680609eb49b3ff6444\nLinux Linux 5.8",
    "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": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
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            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "a51c328df3106663879645680609eb49b3ff6444",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
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    "ai_score": 0
}