{
  "cveId": "CVE-2021-47444",
  "url": "https://patchblox.com/security/cve/CVE-2021-47444",
  "summary": "CVE-2021-47444 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47444, released May 22, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  drm/edid: In connector_bad_edid() cap num_of_ext...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/edid: In connector_bad_edid() cap num_of_ext by num_blocks read  In commit e11f5bd8228f (\u0022drm: Add support for DP 1.4 Compliance edid corruption test\u0022) the function connector_bad_edid() started assuming that the memory for the EDID passed to it was big enough to hold \u0060edid[0x7e] \u002B 1\u0060 blocks of data (1 extra for the base block). It completely ignored the fact that the function was passed \u0060num_blocks\u0060 which indicated how much memory had been allocated for the EDID.  Let\u0027s fix this by adding a bounds check.  This is important for handling the case where there\u0027s an error in the first block of the EDID. In that case we will call connector_bad_edid() without having re-allocated memory based on \u0060edid[0x7e]\u0060.",
  "published": "2024-05-22T07:15:09Z",
  "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": 0.00225,
  "epssPercentile": 0.13239,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.14.16-1",
      "fix": "DEBIAN-CVE-2021-47444",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47444",
      "released": "2024-05-22T07:15:09Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.14.16-1",
      "fix": "DEBIAN-CVE-2021-47444",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47444",
      "released": "2024-05-22T07:15:09Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.14.16-1",
      "fix": "DEBIAN-CVE-2021-47444",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47444",
      "released": "2024-05-22T07:15:09Z"
    }
  ],
  "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"
  }
}