{
  "cveId": "CVE-2025-40285",
  "url": "https://patchblox.com/security/cve/CVE-2025-40285",
  "summary": "CVE-2025-40285 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-40285, released December 6, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "smb/server: fix possible refcount leak in smb2_sess_setup()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  smb/server: fix possible refcount leak in smb2_sess_setup()  Reference count of ksmbd_session will leak when session need reconnect. Fix this by adding the missing ksmbd_user_session_put().",
  "published": "2025-12-06T22:15:56Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00441,
  "epssPercentile": 0.3852,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-40285",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.159-1",
      "fix": "DEBIAN-CVE-2025-40285",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40285",
      "released": "2025-12-06T22:15:56Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.63-1",
      "fix": "DEBIAN-CVE-2025-40285",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40285",
      "released": "2025-12-06T22:15:56Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.17.9-1",
      "fix": "DEBIAN-CVE-2025-40285",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40285",
      "released": "2025-12-06T22:15:56Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}