ghsa-9554-w67x-xjxp
Vulnerability from github
Published
2025-10-04 09:30
Modified
2025-10-04 09:30
Details

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

ASoC: codec: sma1307: Fix memory corruption in sma1307_setting_loaded()

The sma1307->set.header_size is how many integers are in the header (there are 8 of them) but instead of allocating space of 8 integers we allocate 8 bytes. This leads to memory corruption when we copy data it on the next line:

    memcpy(sma1307->set.header, data,
           sma1307->set.header_size * sizeof(int));

Also since we're immediately copying over the memory in ->set.header, there is no need to zero it in the allocator. Use devm_kmalloc_array() to allocate the memory instead.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39935"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-04T08:15:46Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: codec: sma1307: Fix memory corruption in sma1307_setting_loaded()\n\nThe sma1307-\u003eset.header_size is how many integers are in the header\n(there are 8 of them) but instead of allocating space of 8 integers\nwe allocate 8 bytes.  This leads to memory corruption when we copy data\nit on the next line:\n\n        memcpy(sma1307-\u003eset.header, data,\n               sma1307-\u003eset.header_size * sizeof(int));\n\nAlso since we\u0027re immediately copying over the memory in -\u003eset.header,\nthere is no need to zero it in the allocator.  Use devm_kmalloc_array()\nto allocate the memory instead.",
  "id": "GHSA-9554-w67x-xjxp",
  "modified": "2025-10-04T09:30:20Z",
  "published": "2025-10-04T09:30:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39935"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/78338108b5a856dc98223a335f147846a8a18c51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd59ca8f75dbb42a67fcae975c766114644e36c4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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