{
  "cveId": "CVE-2022-33747",
  "url": "https://patchblox.com/security/cve/CVE-2022-33747",
  "summary": "CVE-2022-33747 is fixed in xen on 1 platform, first by DEBIAN-CVE-2022-33747, released October 11, 2022. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "xen: Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g",
  "description": "Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest\u0027s P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings.",
  "published": "2022-10-11T13:15:10Z",
  "severity": "low",
  "cvss": 3.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L",
  "epss": 0.00285,
  "epssPercentile": 0.21124,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "4.16.2\u002B90-g0d39a6d1ae-1",
      "fix": "DEBIAN-CVE-2022-33747",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-33747",
      "released": "2022-10-11T13:15:10Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "4.16.2\u002B90-g0d39a6d1ae-1",
      "fix": "DEBIAN-CVE-2022-33747",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-33747",
      "released": "2022-10-11T13:15:10Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 14",
      "fixedVersion": "4.16.2\u002B90-g0d39a6d1ae-1",
      "fix": "DEBIAN-CVE-2022-33747",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-33747",
      "released": "2022-10-11T13:15:10Z"
    }
  ],
  "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"
  }
}