CVE-2025-68803 (GCVE-0-2025-68803)
Vulnerability from cvelistv5
Published
2026-01-13 15:29
Modified
2026-02-09 08:33
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: NFSD: NFSv4 file creation neglects setting ACL An NFSv4 client that sets an ACL with a named principal during file creation retrieves the ACL afterwards, and finds that it is only a default ACL (based on the mode bits) and not the ACL that was requested during file creation. This violates RFC 8881 section 6.4.1.3: "the ACL attribute is set as given". The issue occurs in nfsd_create_setattr(), which calls nfsd_attrs_valid() to determine whether to call nfsd_setattr(). However, nfsd_attrs_valid() checks only for iattr changes and security labels, but not POSIX ACLs. When only an ACL is present, the function returns false, nfsd_setattr() is skipped, and the POSIX ACL is never applied to the inode. Subsequently, when the client retrieves the ACL, the server finds no POSIX ACL on the inode and returns one generated from the file's mode bits rather than returning the originally-specified ACL.
References
Impacted products
Vendor Product Version
Linux Linux Version: c5409ce523af40d5c3019717bc5b4f72038d48be
Version: d52acd23a327cada5fb597591267cfc09f08bb1d
Version: c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b
Version: c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b
Version: c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b
Version: c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b
Version: c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: NFSv4 file creation neglects setting ACL\n\nAn NFSv4 client that sets an ACL with a named principal during file\ncreation retrieves the ACL afterwards, and finds that it is only a\ndefault ACL (based on the mode bits) and not the ACL that was\nrequested during file creation. This violates RFC 8881 section\n6.4.1.3: \"the ACL attribute is set as given\".\n\nThe issue occurs in nfsd_create_setattr(), which calls\nnfsd_attrs_valid() to determine whether to call nfsd_setattr().\nHowever, nfsd_attrs_valid() checks only for iattr changes and\nsecurity labels, but not POSIX ACLs. When only an ACL is present,\nthe function returns false, nfsd_setattr() is skipped, and the\nPOSIX ACL is never applied to the inode.\n\nSubsequently, when the client retrieves the ACL, the server finds\nno POSIX ACL on the inode and returns one generated from the file\u0027s\nmode bits rather than returning the originally-specified ACL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-09T08:33:52.010Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/c182e1e0b7640f6bcc0c5ca8d473f7c57199ea3d"
        },
        {
          "url": "https://git.kernel.org/stable/c/75f91534f9acdfef77f8fa094313b7806f801725"
        },
        {
          "url": "https://git.kernel.org/stable/c/60dbdef2ebc2317266a385e4debdb1bb0e57afe1"
        },
        {
          "url": "https://git.kernel.org/stable/c/381261f24f4e4b41521c0e5ef5cc0b9a786a9862"
        },
        {
          "url": "https://git.kernel.org/stable/c/bf4e671c651534a307ab2fabba4926116beef8c3"
        },
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          "url": "https://git.kernel.org/stable/c/214b396480061cbc8b16f2c518b2add7fbfa5192"
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        {
          "url": "https://git.kernel.org/stable/c/913f7cf77bf14c13cfea70e89bcb6d0b22239562"
        }
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      "title": "NFSD: NFSv4 file creation neglects setting ACL",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68803",
    "datePublished": "2026-01-13T15:29:11.732Z",
    "dateReserved": "2025-12-24T10:30:51.045Z",
    "dateUpdated": "2026-02-09T08:33:52.010Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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