GHSA-2337-FJ37-R35Q

Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30
VLAI?
Details

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

wifi: ath9k: avoid referencing uninit memory in ath9k_wmi_ctrl_rx

For the reasons also described in commit b383e8abed41 ("wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg()"), ath9k_htc_rx_msg() should validate pkt_len before accessing the SKB.

For example, the obtained SKB may have been badly constructed with pkt_len = 8. In this case, the SKB can only contain a valid htc_frame_hdr but after being processed in ath9k_htc_rx_msg() and passed to ath9k_wmi_ctrl_rx() endpoint RX handler, it is expected to have a WMI command header which should be located inside its data payload.

Implement sanity checking inside ath9k_wmi_ctrl_rx(). Otherwise, uninit memory can be referenced.

Tested on Qualcomm Atheros Communications AR9271 802.11n .

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-54300"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:16:19Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: avoid referencing uninit memory in ath9k_wmi_ctrl_rx\n\nFor the reasons also described in commit b383e8abed41 (\"wifi: ath9k: avoid\nuninit memory read in ath9k_htc_rx_msg()\"), ath9k_htc_rx_msg() should\nvalidate pkt_len before accessing the SKB.\n\nFor example, the obtained SKB may have been badly constructed with\npkt_len = 8. In this case, the SKB can only contain a valid htc_frame_hdr\nbut after being processed in ath9k_htc_rx_msg() and passed to\nath9k_wmi_ctrl_rx() endpoint RX handler, it is expected to have a WMI\ncommand header which should be located inside its data payload.\n\nImplement sanity checking inside ath9k_wmi_ctrl_rx(). Otherwise, uninit\nmemory can be referenced.\n\nTested on Qualcomm Atheros Communications AR9271 802.11n .\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.",
  "id": "GHSA-2337-fj37-r35q",
  "modified": "2025-12-30T15:30:35Z",
  "published": "2025-12-30T15:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54300"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0bc12e41af4e3ae1f0efecc377f0514459df0707"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/250efb4d3f5b32a115ea6bf25437ba44a1b3c04f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/28259ce4f1f1f9ab37fa817756c89098213d2fc0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75acec91aeaa07375cd5f418069e61b16d39bbad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ed572e52714593b209e3aa352406aff84481179"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/90e3c10177573b8662ac9858abd9bf731d5d98e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad5425e70789c29b93acafb5bb4629e4eb908296"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1c2ff2bd84c3692c9df267a2b991ce92bfca8ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f24292e827088bba8de7158501ac25a59b064953"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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