ghsa-3qv5-2654-5g25
Vulnerability from github
Published
2025-08-19 18:31
Modified
2025-11-03 18:31
Details

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

ksmbd: fix null pointer dereference error in generate_encryptionkey

If client send two session setups with krb5 authenticate to ksmbd, null pointer dereference error in generate_encryptionkey could happen. sess->Preauth_HashValue is set to NULL if session is valid. So this patch skip generate encryption key if session is valid.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38562"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-19T17:15:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix null pointer dereference error in generate_encryptionkey\n\nIf client send two session setups with krb5 authenticate to ksmbd,\nnull pointer dereference error in generate_encryptionkey could happen.\nsess-\u003ePreauth_HashValue is set to NULL if session is valid.\nSo this patch skip generate encryption key if session is valid.",
  "id": "GHSA-3qv5-2654-5g25",
  "modified": "2025-11-03T18:31:33Z",
  "published": "2025-08-19T18:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38562"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/015ef163d65496ae3ba6192c96140a22743f0353"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2a30ed6428ce83afedca1a6c5c5c4247bcf12d0e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96a82e19434a2522525baab59c33332658bc7653"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b493ab6f35178afd8d619800df9071992f715de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9c2dbbc959e1fcc6f603a1a843e9cf743ba383bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d79c8bebaa622ee223128be7c66d8aaeeb634a57"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-25-917"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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