{
  "cveId": "CVE-2026-53395",
  "url": "https://patchblox.com/security/cve/CVE-2026-53395",
  "summary": "CVE-2026-53395 is fixed in linux on 1 platform by DEBIAN-CVE-2026-53395 (version 7.1.3-1), released July 20, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  nfsd: fix dead ACL conflict guard in nfsd4_creat...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  nfsd: fix dead ACL conflict guard in nfsd4_create  nfsd4_create() steals create-\u003Ecr_dpacl/cr_pacl into the local nfsd_attrs via the designated initializer, then immediately sets the source pointers to NULL. The subsequent conflict guard tests the already-nilled source fields, making it permanently dead code:      if (create-\u003Ecr_acl) {         if (create-\u003Ecr_dpacl || create-\u003Ecr_pacl)  /* always false */  When a client encodes both FATTR4_WORD0_ACL and FATTR4_WORD2_POSIX_{DEFAULT,ACCESS}_ACL in the same CREATE fattr bitmap, nfsd4_acl_to_attr() overwrites attrs.na_pacl/na_dpacl without releasing the originals, leaking two posix_acl slab objects per request. Repeated requests cause unbounded slab exhaustion.  Fix by checking attrs.na_dpacl/na_pacl (the stolen values) instead of the nilled create-\u003Ecr_dpacl/cr_pacl, matching the correct pattern already used in nfsd4_setattr().",
  "published": "2026-07-19T12:16:50Z",
  "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": 0.42248,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.3-1",
      "fix": "DEBIAN-CVE-2026-53395",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53395",
      "released": "2026-07-20T12:58:36Z"
    }
  ],
  "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"
  }
}