ghsa-prq3-3cx6-vrj4
Vulnerability from github
Published
2025-12-16 15:30
Modified
2025-12-16 15:30
Details

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

staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing

The Supported Rates IE length from an incoming Association Request frame was used directly as the memcpy() length when copying into a fixed-size 16-byte stack buffer (supportRate). A malicious station can advertise an IE length larger than 16 bytes, causing a stack buffer overflow.

Clamp ie_len to the buffer size before copying the Supported Rates IE, and correct the bounds check when merging Extended Supported Rates to prevent a second potential overflow.

This prevents kernel stack corruption triggered by malformed association requests.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68255"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-16T15:15:54Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing\n\nThe Supported Rates IE length from an incoming Association Request frame\nwas used directly as the memcpy() length when copying into a fixed-size\n16-byte stack buffer (supportRate). A malicious station can advertise an\nIE length larger than 16 bytes, causing a stack buffer overflow.\n\nClamp ie_len to the buffer size before copying the Supported Rates IE,\nand correct the bounds check when merging Extended Supported Rates to\nprevent a second potential overflow.\n\nThis prevents kernel stack corruption triggered by malformed association\nrequests.",
  "id": "GHSA-prq3-3cx6-vrj4",
  "modified": "2025-12-16T15:30:47Z",
  "published": "2025-12-16T15:30:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68255"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25411f5fcf5743131158f337c99c2bbf3f8477f5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61871c83259a511980ec2664964cecc69005398b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ef0e1c10455927867cac8f0ed6b49f328f8cf95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e841d8ea722315b781c4fc5bf4f7670fbca88875"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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