{
  "cveId": "CVE-2023-4389",
  "url": "https://patchblox.com/security/cve/CVE-2023-4389",
  "summary": "CVE-2023-4389 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-4389, released August 16, 2023. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a dou...",
  "description": "A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with user privilege to crash the system or may lead to leaked internal kernel information.",
  "published": "2023-08-16T19:15:10Z",
  "severity": "high",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.00252,
  "epssPercentile": 0.16802,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.17.6-1",
      "fix": "DEBIAN-CVE-2023-4389",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-4389",
      "released": "2023-08-16T19:15:10Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.17.6-1",
      "fix": "DEBIAN-CVE-2023-4389",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-4389",
      "released": "2023-08-16T19:15:10Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.17.6-1",
      "fix": "DEBIAN-CVE-2023-4389",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-4389",
      "released": "2023-08-16T19:15:10Z"
    }
  ],
  "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"
  }
}