ghsa-8xw7-j864-h87q
Vulnerability from github
Published
2025-04-16 15:34
Modified
2025-11-03 21:33
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Details

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

ksmbd: validate zero num_subauth before sub_auth is accessed

Access psid->sub_auth[psid->num_subauth - 1] without checking if num_subauth is non-zero leads to an out-of-bounds read. This patch adds a validation step to ensure num_subauth != 0 before sub_auth is accessed.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-22038"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-16T15:15:56Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: validate zero num_subauth before sub_auth is accessed\n\nAccess psid-\u003esub_auth[psid-\u003enum_subauth - 1] without checking\nif num_subauth is non-zero leads to an out-of-bounds read.\nThis patch adds a validation step to ensure num_subauth != 0\nbefore sub_auth is accessed.",
  "id": "GHSA-8xw7-j864-h87q",
  "modified": "2025-11-03T21:33:34Z",
  "published": "2025-04-16T15:34:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22038"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e36a3e080d6d8bd7a34e089345d043da4ac8283"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ac65de111c686c95316ade660f8ba7aea3cd3cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56de7778a48560278c334077ace7b9ac4bfb2fd1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68c6c3142bfcdb049839d40a9a59ebe8ea865002"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf21e29d78cd2c2371023953d9c82dfef82ebb36"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c8bfe1954a0b89e7b29b3a3e7f4c5e0ebd295e20"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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