ghsa-82cg-8mxr-gw2q
Vulnerability from github
Published
2024-08-17 12:30
Modified
2024-10-29 18:30
Severity ?
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Details

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

wifi: virt_wifi: avoid reporting connection success with wrong SSID

When user issues a connection with a different SSID than the one virt_wifi has advertised, the __cfg80211_connect_result() will trigger the warning: WARN_ON(bss_not_found).

The issue is because the connection code in virt_wifi does not check the SSID from user space (it only checks the BSSID), and virt_wifi will call cfg80211_connect_result() with WLAN_STATUS_SUCCESS even if the SSID is different from the one virt_wifi has advertised. Eventually cfg80211 won't be able to find the cfg80211_bss and generate the warning.

Fixed it by checking the SSID (from user space) in the connection code.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2024-43841"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-17T10:15:09Z",
    "severity": "LOW"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: virt_wifi: avoid reporting connection success with wrong SSID\n\nWhen user issues a connection with a different SSID than the one\nvirt_wifi has advertised, the __cfg80211_connect_result() will\ntrigger the warning: WARN_ON(bss_not_found).\n\nThe issue is because the connection code in virt_wifi does not\ncheck the SSID from user space (it only checks the BSSID), and\nvirt_wifi will call cfg80211_connect_result() with WLAN_STATUS_SUCCESS\neven if the SSID is different from the one virt_wifi has advertised.\nEventually cfg80211 won\u0027t be able to find the cfg80211_bss and generate\nthe warning.\n\nFixed it by checking the SSID (from user space) in the connection code.",
  "id": "GHSA-82cg-8mxr-gw2q",
  "modified": "2024-10-29T18:30:35Z",
  "published": "2024-08-17T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43841"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05c4488a0e446c6ccde9f22b573950665e1cd414"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/36e92b5edc8e0daa18e9325674313802ce3fbc29"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/416d3c1538df005195721a200b0371d39636e05d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93e898a264b4e0a475552ba9f99a016eb43ef942"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/994fc2164a03200c3bf42fb45b3d49d9d6d33a4d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5d14b0c6716fad7f0c94ac6e1d6f60a49f985c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3cc85a10abc8eae48988336cdd3689ab92581b3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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