ath9k: fix use-after-free in ath9k_hif_usb_rx_cb

{
  "id": "401aecd7dd51a032f14987a2a0c9f7ae305e8cb5e5121b457853b3a4a8701a10",
  "url": "https://osv.dev/vulnerability/CVE-2022-50179",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ath9k: fix use-after-free in ath9k_hif_usb_rx_cb",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ath9k: fix use-after-free in ath9k_hif_usb_rx_cb Syzbot reported use-after-free Read in ath9k_hif_usb_rx_cb() [0]. The problem was in incorrect htc_handle->drv_priv initialization. Probable call trace which can trigger use-after-free: ath9k_htc_probe_device() /* htc_handle->drv_priv = priv; */ ath9k_htc_wait_for_target() <--- Failed ieee80211_free_hw() <--- priv pointer is freed ... ath9k_hif_usb_rx_cb() ath9k_hif_usb_rx_stream() RX_STAT_INC() <--- htc_handle->drv_priv access In order to not add fancy protection for drv_priv we can move htc_handle->drv_priv initialization at the end of the ath9k_htc_probe_device() and add helper macro to make all *_STAT_* macros NULL safe, since syzbot has reported related NULL deref in that macros [1]",
    "evidence": "osv:CVE-2022-50179",
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    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-50179",
      "aliases": [
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      "modified": "2026-10-28T02:30:42.585135646Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/03ca957c5f7b55660957eda20b5db4110319ac7a",
        "https://git.kernel.org/stable/c/0ac4827f78c7ffe8eef074bc010e7e34bc22f533",
        "https://git.kernel.org/stable/c/62bc1ea5c7401d77eaf73d0c6a15f3d2e742856e",
        "https://git.kernel.org/stable/c/6b14ab47937ba441e75e8dbb9fbfc9c55efa41c6",
        "https://git.kernel.org/stable/c/ab7a0ddf5f1cdec63cb21840369873806fc36d80",
        "https://git.kernel.org/stable/c/b66ebac40f64336ae2d053883bee85261060bd27",
        "https://git.kernel.org/stable/c/e9e21206b8ea62220b486310c61277e7ebfe7cec",
        "https://git.kernel.org/stable/c/eccd7c3e2596b574241a7670b5b53f5322f470e5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50179.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50179",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50179.json"
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        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 510237,
  "published_at": "2025-06-18T11:03:28.841+00:00"
}