{
  "cveId": "CVE-2026-53244",
  "url": "https://patchblox.com/security/cve/CVE-2026-53244",
  "summary": "CVE-2026-53244 is fixed in linux on 1 platform by DEBIAN-CVE-2026-53244 (version 7.0.13-1), released June 28, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  VFS: fix possible failure to unlock in nfsd4_cre...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  VFS: fix possible failure to unlock in nfsd4_create_file()  atomic_create() in fs/namei.c drops the reference to the dentry when it returns an error. This behaviour was imported into dentry_create() so that it will drop the reference if an error is returned from atomic_create(), though not if vfs_create() returns an error (in the case where -\u003Eatomic_create is not supported).  The caller - nfsd4_create_file() - is made aware of this by checking path-\u003Edentry, which will either be a counted reference to a dentry, or an error pointer.  However the change to use start_creating()/end_creating() (which landed shortly before the dentry_create() change landed, though was likely developed around the same time) means that nfsd4_create_file() *needs* a valid dentry so that it can unlock the parent.  The net result is that if NFSD exports a filesystem which uses -\u003Eatomic_create, and if a call to -\u003Eatomic_create returns an error, then nfsd4_create_file() will pass an error pointer to end_creating() and the parent will not be unlocked.  Fix this by changing dentry_create() to make sure path-\u003Edentry is always a valid dentry, never an error-pointer.  The actual error is already returned a different way.  Note that if -\u003Eatomic_create() returns a different dentry (which may not be possible in practice) we are guaranteed (because it is only ever provided by d_spliace_alias()) that it will have the same d_parent and so it will have the same effect when passed to end_creating().",
  "published": "2026-06-25T09:16:42Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00488,
  "epssPercentile": 0.42258,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.13-1",
      "fix": "DEBIAN-CVE-2026-53244",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53244",
      "released": "2026-06-28T17:47:07Z"
    }
  ],
  "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"
  }
}