ghsa-c42x-xw5m-9j9p
Vulnerability from github
Published
2025-05-20 18:30
Modified
2025-05-20 18:30
Details

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

ksmbd: prevent out-of-bounds stream writes by validating *pos

ksmbd_vfs_stream_write() did not validate whether the write offset (pos) was within the bounds of the existing stream data length (v_len). If pos was greater than or equal to v_len, this could lead to an out-of-bounds memory write.

This patch adds a check to ensure *pos is less than v_len before proceeding. If the condition fails, -EINVAL is returned.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37947"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-20T16:15:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: prevent out-of-bounds stream writes by validating *pos\n\nksmbd_vfs_stream_write() did not validate whether the write offset\n(*pos) was within the bounds of the existing stream data length (v_len).\nIf *pos was greater than or equal to v_len, this could lead to an\nout-of-bounds memory write.\n\nThis patch adds a check to ensure *pos is less than v_len before\nproceeding. If the condition fails, -EINVAL is returned.",
  "id": "GHSA-c42x-xw5m-9j9p",
  "modified": "2025-05-20T18:30:56Z",
  "published": "2025-05-20T18:30:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37947"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04c8a38c60346bb5a7c49b276de7233f703ce9cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ca6df4f40cf4c32487944aaf48319cb6c25accc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f61da79df86fd140c7768e668ad846bfa7ec8e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d62ba16563a86aae052f96d270b3b6f78fca154c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6356499fd216ed6343ae0363f4c9303f02c5034"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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