{
  "cveId": "CVE-2023-2236",
  "url": "https://patchblox.com/security/cve/CVE-2023-2236",
  "summary": "CVE-2023-2236 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-2236, released May 1, 2023. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege esc...",
  "description": "A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation.  Both\u00A0io_install_fixed_file\u00A0and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability.  We recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4.",
  "published": "2023-05-01T13:15:44Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00428,
  "epssPercentile": 0.3726,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.0.12-1",
      "fix": "DEBIAN-CVE-2023-2236",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-2236",
      "released": "2023-05-01T13:15:44Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.12-1",
      "fix": "DEBIAN-CVE-2023-2236",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-2236",
      "released": "2023-05-01T13:15:44Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.12-1",
      "fix": "DEBIAN-CVE-2023-2236",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-2236",
      "released": "2023-05-01T13:15:44Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}