ghsa-q9qg-fj9x-mqhg
Vulnerability from github
Published
2025-04-16 15:34
Modified
2025-11-03 21:33
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix session use-after-free in multichannel connection

There is a race condition between session setup and ksmbd_sessions_deregister. The session can be freed before the connection is added to channel list of session. This patch check reference count of session before freeing it.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-22040"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-16T15:15:56Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix session use-after-free in multichannel connection\n\nThere is a race condition between session setup and\nksmbd_sessions_deregister. The session can be freed before the connection\nis added to channel list of session.\nThis patch check reference count of session before freeing it.",
  "id": "GHSA-q9qg-fj9x-mqhg",
  "modified": "2025-11-03T21:33:35Z",
  "published": "2025-04-16T15:34:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22040"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3980770cb1470054e6400fd97668665975726737"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/596407adb9af1ee75fe7c7529607783d31b66e7f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7dfbd4c43eed91dd2548a95236908025707a8dfd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9069939d762138e232a6f79e3e1462682ed6a17d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94c281721d4ed2d972232414b91d98a6f5bdb16b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa4cdb8cbca7d6cb6aa13e4d8d83d1103f6345db"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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