ghsa-w5qx-5mqj-mr45
Vulnerability from github
Published
2025-06-18 12:30
Modified
2025-06-18 12:30
Details

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

wifi: mac80211: Set n_channels after allocating struct cfg80211_scan_request

Make sure that n_channels is set after allocating the struct cfg80211_registered_device::int_scan_req member. Seen with syzkaller:

UBSAN: array-index-out-of-bounds in net/mac80211/scan.c:1208:5 index 0 is out of range for type 'struct ieee80211_channel [] __counted_by(n_channels)' (aka 'struct ieee80211_channel []')

This was missed in the initial conversions because I failed to locate the allocation likely due to the "sizeof(void *)" not matching the "channels" array type.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38013"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T10:15:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: Set n_channels after allocating struct cfg80211_scan_request\n\nMake sure that n_channels is set after allocating the\nstruct cfg80211_registered_device::int_scan_req member. Seen with\nsyzkaller:\n\nUBSAN: array-index-out-of-bounds in net/mac80211/scan.c:1208:5\nindex 0 is out of range for type \u0027struct ieee80211_channel *[] __counted_by(n_channels)\u0027 (aka \u0027struct ieee80211_channel *[]\u0027)\n\nThis was missed in the initial conversions because I failed to locate\nthe allocation likely due to the \"sizeof(void *)\" not matching the\n\"channels\" array type.",
  "id": "GHSA-w5qx-5mqj-mr45",
  "modified": "2025-06-18T12:30:31Z",
  "published": "2025-06-18T12:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38013"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07c737d9ab02c07b562aefcca16aa95077368e24"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82bbe02b2500ef0a62053fe2eb84773fe31c5a0a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3192e999a0d05ea0ba2c59c09afaf0b8ee70b81"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fde33ab3c052a302ee8a0b739094b88ceae4dd67"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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