ghsa-w4c2-47fv-3g9c
Vulnerability from github
Published
2024-06-19 15:30
Modified
2024-06-19 15:30
Details

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

wifi: brcmfmac: pcie: handle randbuf allocation failure

The kzalloc() in brcmf_pcie_download_fw_nvram() will return null if the physical memory has run out. As a result, if we use get_random_bytes() to generate random bytes in the randbuf, the null pointer dereference bug will happen.

In order to prevent allocation failure, this patch adds a separate function using buffer on kernel stack to generate random bytes in the randbuf, which could prevent the kernel stack from overflow.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-38575"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-19T14:15:17Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: pcie: handle randbuf allocation failure\n\nThe kzalloc() in brcmf_pcie_download_fw_nvram() will return null\nif the physical memory has run out. As a result, if we use\nget_random_bytes() to generate random bytes in the randbuf, the\nnull pointer dereference bug will happen.\n\nIn order to prevent allocation failure, this patch adds a separate\nfunction using buffer on kernel stack to generate random bytes in\nthe randbuf, which could prevent the kernel stack from overflow.",
  "id": "GHSA-w4c2-47fv-3g9c",
  "modified": "2024-06-19T15:30:53Z",
  "published": "2024-06-19T15:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38575"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/316f790ebcf94bdf59f794b7cdea4068dc676d4c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3729ca9e48d19a03ae049e2bde510e161c2f3720"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c15eb344b0d4d3468c9b2a7591ad2b859b29b88"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c37466406f075476c2702ecc01917928af871f3b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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