{
  "cveId": "CVE-2021-47035",
  "url": "https://patchblox.com/security/cve/CVE-2021-47035",
  "summary": "CVE-2021-47035 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47035, released February 28, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  iommu/vt-d: Remove WO permissions on second-leve...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  iommu/vt-d: Remove WO permissions on second-level paging entries  When the first level page table is used for IOVA translation, it only supports Read-Only and Read-Write permissions. The Write-Only permission is not supported as the PRESENT bit (implying Read permission) should always set. When using second level, we still give separate permissions that allows WriteOnly which seems inconsistent and awkward. We want to have consistent behavior. After moving to 1st level, we don\u0027t want things to work sometimes, and break if we use 2nd level for the same mappings. Hence remove this configuration.",
  "published": "2024-02-28T09:15:39Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00258,
  "epssPercentile": 0.17595,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-47035",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47035",
      "released": "2024-02-28T09:15:39Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-47035",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47035",
      "released": "2024-02-28T09:15:39Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-47035",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47035",
      "released": "2024-02-28T09:15:39Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}