{
  "cveId": "CVE-2026-62427",
  "url": "https://patchblox.com/security/cve/CVE-2026-62427",
  "summary": "CVE-2026-62427 is fixed in xen on 1 platform, first by SUSE-SU-2026:3409-1, released July 29, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "xen: [This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to...",
  "description": "[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.]  To manage the system, sysctl and platform operations are used by the control domain or a possible Xenstore domain.  Some of these operations may not be executed in parallel, so a system-wide lock each is used. The way those locks are acquired is, however, not providing any fairness. Furthermore, with XSM/Flask in use, the lock acquire will, for some operations, occur ahead of any permission checking.  The sysctl issue is CVE-2026-62426.  The platform-op issue is CVE-2026-62427.",
  "published": "2026-07-28T13:19:01Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.0024,
  "epssPercentile": 0.15162,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "4.17.7-0\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-62427",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-62427",
      "released": "2026-08-03T14:46:46Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "4.20.3\u002B127-gc42374a105-0\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-62427",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-62427",
      "released": "2026-08-03T14:46:46Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 14",
      "fixedVersion": "4.20.3\u002B127-gc42374a105-1",
      "fix": "DEBIAN-CVE-2026-62427",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-62427",
      "released": "2026-08-03T14:46:46Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "sles 15.6",
      "fixedVersion": "4.18.5_20-150600.3.53.3",
      "fix": "SUSE-SU-2026:3409-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3409-1",
      "released": "2026-07-29T11:18:18Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "sles 15.7",
      "fixedVersion": "4.20.4_04-150700.3.46.1",
      "fix": "SUSE-SU-2026:4090-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4090-1",
      "released": "2026-09-08T12:26:56Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T01:44:33Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}