GHSA-W5QX-5MQJ-MR45
Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-17 15:30In 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.
{
"affected": [],
"aliases": [
"CVE-2025-38013"
],
"database_specific": {
"cwe_ids": [
"CWE-129"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-18T10:15:32Z",
"severity": "HIGH"
},
"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": "2025-11-17T15:30:33Z",
"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": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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