ghsa-6x57-w9x2-9hq7
Vulnerability from github
Published
2025-12-16 15:30
Modified
2025-12-16 15:30
Details

In the Linux kernel, the following vulnerability has been resolved:

nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing

Theoretically it's an oopsable race, but I don't believe one can manage to hit it on real hardware; might become doable on a KVM, but it still won't be easy to attack.

Anyway, it's easy to deal with - since xdr_encode_hyper() is just a call of put_unaligned_be64(), we can put that under ->d_lock and be done with that.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68185"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-16T14:15:51Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfs4_setup_readdir(): insufficient locking for -\u003ed_parent-\u003ed_inode dereferencing\n\nTheoretically it\u0027s an oopsable race, but I don\u0027t believe one can manage\nto hit it on real hardware; might become doable on a KVM, but it still\nwon\u0027t be easy to attack.\n\nAnyway, it\u0027s easy to deal with - since xdr_encode_hyper() is just a call of\nput_unaligned_be64(), we can put that under -\u003ed_lock and be done with that.",
  "id": "GHSA-6x57-w9x2-9hq7",
  "modified": "2025-12-16T15:30:44Z",
  "published": "2025-12-16T15:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68185"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/40be5b9080114f18b0cea386db415b68a7273c1a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/504b3fb9948a9e96ebbabdee0d33966a8bab15cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6025f641a0e30afdc5aa62017397b1860ad9f677"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a890a2e339b929dbd843328f9a92a1625404fe63"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6cafe71eb3b5579b245ba1bd528a181e77f3df1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eacfd08b26a062f1095b18719715bc82ad35312e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5e570eaab36a110c6ffda32b87c51170990c2d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa4daf7d11e45b72aad5d943a7ab991f869fff79"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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