{
  "cveId": "CVE-2023-38431",
  "url": "https://patchblox.com/security/cve/CVE-2023-38431",
  "summary": "CVE-2023-38431 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-38431, released July 18, 2023. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "linux: An issue was discovered in the Linux kernel before 6.3.8",
  "description": "An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/connection.c in ksmbd does not validate the relationship between the NetBIOS header\u0027s length field and the SMB header sizes, via pdu_size in ksmbd_conn_handler_loop, leading to an out-of-bounds read.",
  "published": "2023-07-18T00:15:09Z",
  "severity": "critical",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.01156,
  "epssPercentile": 0.67242,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.37-1",
      "fix": "DEBIAN-CVE-2023-38431",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-38431",
      "released": "2023-07-18T00:15:09Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.3.11-1",
      "fix": "DEBIAN-CVE-2023-38431",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-38431",
      "released": "2023-07-18T00:15:09Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.3.11-1",
      "fix": "DEBIAN-CVE-2023-38431",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-38431",
      "released": "2023-07-18T00:15:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}