{
  "cveId": "CVE-2026-43391",
  "url": "https://patchblox.com/security/cve/CVE-2026-43391",
  "summary": "CVE-2026-43391 is fixed in linux on 1 platform by DEBIAN-CVE-2026-43391 (version 6.19.10-1), released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  nsfs: tighten permission checks for handle openi...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  nsfs: tighten permission checks for handle opening  Even privileged services should not necessarily be able to see other privileged service\u0027s namespaces so they can\u0027t leak information to each other. Use may_see_all_namespaces() helper that centralizes this policy until the nstree adapts.",
  "published": "2026-05-08T15:16:50Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
  "epss": 0.00128,
  "epssPercentile": 0.0244,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.19.10-1",
      "fix": "DEBIAN-CVE-2026-43391",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-43391",
      "released": "2026-05-15T16:01:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}