cifs: fix potential race when tree connecting ipc

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  "url": "https://osv.dev/vulnerability/CVE-2023-54280",
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  "payload": {
    "kind": "advisory",
    "title": "cifs: fix potential race when tree connecting ipc",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential race when tree connecting ipc Protect access of TCP_Server_Info::hostname when building the ipc tree name as it might get freed in cifsd thread and thus causing an use-after-free bug in __tree_connect_dfs_target(). Also, while at it, update status of IPC tcon on success and then avoid any extra tree connects.",
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      "modified": "2026-10-28T02:30:28.534136071Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/536ec71ba060a02fabe8e22cecb82fe7b3a8708b",
        "https://git.kernel.org/stable/c/553476df55a111e6a66ad9155256aec0ec1b7ad0",
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        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54280.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-54280",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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  "source_id": "core-osv",
  "document_id": 495027,
  "published_at": "2025-12-30T12:23:22.335+00:00"
}