smb: server: fix use-after-free in smb2_open()_CVE-2026-43378

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: server: fix use-after-free in smb2_open()\n\nThe opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is\ndereferenced after rcu_read_unlock(), creating a use-after-free\nwindow.",
    "published": "2026-05-08T14:21:27.319Z",
    "modified": "2026-05-20T16:08:05.965Z",
    "type": "cve",
    "title": "smb: server: fix use-after-free in smb2_open()",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/e1b21e6066615e7d3d3a7aa2677e415e563fd7cc\nhttps://git.kernel.org/stable/c/b720c84087cb547f23ce03eab93568c1769e4556\nhttps://git.kernel.org/stable/c/54b48ae83de8bb06e65079d96368efe359d4909c\nhttps://git.kernel.org/stable/c/8f5b1a7cb009a93c48e9e334a2f59a660f9afc07\nhttps://git.kernel.org/stable/c/190e5f808e8058640b408ccfed25440b441a718a\nhttps://git.kernel.org/stable/c/1e689a56173827669a35da7cb2a3c78ed5c53680",
    "id": "CVE-2026-43378",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9\nLinux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9\nLinux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9\nLinux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9\nLinux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9\nLinux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9\nLinux Linux 5.15",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/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": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9",
    "vendor": "Linux",
    "ai_description": "Use-after-free vulnerability in the Linux kernel",
    "ai_severity": "Critical",
    "ai_vendor": "Linux Foundation",
    "ai_product": "Linux Kernel",
    "ai_version": "5.15",
    "ai_score": 9.8
}