{
  "cveId": "CVE-2025-39951",
  "url": "https://patchblox.com/security/cve/CVE-2025-39951",
  "summary": "CVE-2025-39951 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-39951, released October 4, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "um: virtio_uml: Fix use-after-free after put_device in probe",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  um: virtio_uml: Fix use-after-free after put_device in probe  When register_virtio_device() fails in virtio_uml_probe(), the code sets vu_dev-\u003Eregistered = 1 even though the device was not successfully registered. This can lead to use-after-free or other issues.",
  "published": "2025-10-04T08:15:48Z",
  "severity": "Moderate",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00152,
  "epssPercentile": 0.04408,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-39951",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.158-1",
      "fix": "DEBIAN-CVE-2025-39951",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-39951",
      "released": "2025-10-04T08:15:48Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.57-1",
      "fix": "DEBIAN-CVE-2025-39951",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-39951",
      "released": "2025-10-04T08:15:48Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.16.9-1",
      "fix": "DEBIAN-CVE-2025-39951",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-39951",
      "released": "2025-10-04T08:15:48Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T19:38:12Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}