ghsa-gvg4-xh6r-ggrp
Vulnerability from github
Published
2025-04-16 15:34
Modified
2025-09-19 15:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

ksmbd: fix null pointer dereference in alloc_preauth_hash()

The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn->preauth_info is not allocated. This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore session setup request if smb2 negotiate phase is not complete.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-22037"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-16T15:15:56Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix null pointer dereference in alloc_preauth_hash()\n\nThe Client send malformed smb2 negotiate request. ksmbd return error\nresponse. Subsequently, the client can send smb2 session setup even\nthought conn-\u003epreauth_info is not allocated.\nThis patch add KSMBD_SESS_NEED_SETUP status of connection to ignore\nsession setup request if smb2 negotiate phase is not complete.",
  "id": "GHSA-gvg4-xh6r-ggrp",
  "modified": "2025-09-19T15:31:07Z",
  "published": "2025-04-16T15:34:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22037"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8eb243e670ecf30e91524dd12f7260dac07d335"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cce57cd8c5dead24127cf2308fdd60fcad2d6ba6"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-25-310"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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