net/smc: avoid early lgr access in smc_clc_wait_msg_CVE-2026-46027

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: avoid early lgr access in smc_clc_wait_msg\n\nA CLC decline can be received while the handshake is still in an early\nstage, before the connection has been associated with a link group.\n\nThe decline handling in smc_clc_wait_msg() updates link-group level sync\nstate for first-contact declines, but that state only exists after link\ngroup setup has completed. Guard the link-group update accordingly and\nkeep the per-socket peer diagnosis handling unchanged.\n\nThis preserves the existing sync_err handling for established link-group\ncontexts and avoids touching link-group state before it is available.",
    "published": "2026-05-27T12:56:35.628Z",
    "modified": "2026-05-30T10:46:44.120Z",
    "type": "cve",
    "title": "net/smc: avoid early lgr access in smc_clc_wait_msg",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069\nhttps://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f\nhttps://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712\nhttps://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2\nhttps://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f",
    "id": "CVE-2026-46027",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 0cfdd8f92cac01afbb12e4500514036a2b78756b\nLinux Linux 0cfdd8f92cac01afbb12e4500514036a2b78756b\nLinux Linux 0cfdd8f92cac01afbb12e4500514036a2b78756b\nLinux Linux 0cfdd8f92cac01afbb12e4500514036a2b78756b\nLinux Linux 0cfdd8f92cac01afbb12e4500514036a2b78756b\nLinux Linux 4.11",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}