{
  "cveId": "CVE-2023-53227",
  "url": "https://patchblox.com/security/cve/CVE-2023-53227",
  "summary": "CVE-2023-53227 is fixed in linux on 1 platform, first by CVE-2023-53227, released September 15, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: dirty_cow_znode: Fix memleak in error han...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: dirty_cow_znode: Fix memleak in error handling path\n\nFollowing process will cause a memleak for copied up znode:\n\ndirty_cow_znode\n  zn = copy_znode(c, znode);\n  err = insert_old_idx(c, zbr-\u003Elnum, zbr-\u003Eoffs);\n  if (unlikely(err))\n     return ERR_PTR(err);   // No one refers to zn.\n\nFix it by adding copied znode back to tnc, then it will be freed\nby ubifs_destroy_tnc_subtree() while closing tnc.\n\nFetch a reproducer in [Link].",
  "published": "2025-09-15T15:15:49Z",
  "severity": "",
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 11.6 (bullseye)",
      "fixedVersion": "5.10.178-1",
      "fix": "CVE-2023-53227",
      "url": "https://patchblox.com/security/fix/linux/cve-2023-53227",
      "released": "2025-09-15T15:15:49Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.20-1",
      "fix": "CVE-2023-53227",
      "url": "https://patchblox.com/security/fix/linux/cve-2023-53227",
      "released": "2025-09-15T15:15:49Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.20-1",
      "fix": "CVE-2023-53227",
      "url": "https://patchblox.com/security/fix/linux/cve-2023-53227",
      "released": "2025-09-15T15:15:49Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.20-1",
      "fix": "CVE-2023-53227",
      "url": "https://patchblox.com/security/fix/linux/cve-2023-53227",
      "released": "2025-09-15T15:15:49Z"
    }
  ],
  "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"
  }
}