ghsa-4fwr-9cpg-j96h
Vulnerability from github
Published
2025-12-30 15:30
Modified
2025-12-30 15:30
Details

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

cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message

Commit d5c7076b772a ("smb3: add smb3.1.1 to default dialect list") extend the dialects from 3 to 4, but forget to decrease the extended length when specific the dialect, then the message length is larger than expected.

This maybe leak some info through network because not initialize the message body.

After apply this patch, the VALIDATE_NEGOTIATE_INFO message length is reduced from 28 bytes to 26 bytes.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50859"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:16:00Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message\n\nCommit d5c7076b772a (\"smb3: add smb3.1.1 to default dialect list\")\nextend the dialects from 3 to 4, but forget to decrease the extended\nlength when specific the dialect, then the message length is larger\nthan expected.\n\nThis maybe leak some info through network because not initialize the\nmessage body.\n\nAfter apply this patch, the VALIDATE_NEGOTIATE_INFO message length is\nreduced from 28 bytes to 26 bytes.",
  "id": "GHSA-4fwr-9cpg-j96h",
  "modified": "2025-12-30T15:30:28Z",
  "published": "2025-12-30T15:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50859"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60480291c1fcafad8425d93f771b5bcc2bd398b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9312e04b6c6bc46354ecd0cc82052a2b3df0b529"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/943eb0ede74ecd609fdfd3f0b83e0d237613e526"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0050ec3ebbcb3451df9a65b8460be9b9e02e80c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e98ecc6e94f4e6d21c06660b0f336df02836694f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fada9b8c95c77bb46b89e18117405bc90fce9f74"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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