{
  "cveId": "CVE-2022-50709",
  "url": "https://patchblox.com/security/cve/CVE-2022-50709",
  "summary": "CVE-2022-50709 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50709, released December 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  wifi: ath9k: avoid uninit memory read in ath9k_h...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg()  syzbot is reporting uninit value at ath9k_htc_rx_msg() [1], for ioctl(USB_RAW_IOCTL_EP_WRITE) can call ath9k_hif_usb_rx_stream() with pkt_len = 0 but ath9k_hif_usb_rx_stream() uses __dev_alloc_skb(pkt_len \u002B 32, GFP_ATOMIC) based on an assumption that pkt_len is valid. As a result, ath9k_hif_usb_rx_stream() allocates skb with uninitialized memory and ath9k_htc_rx_msg() is reading from uninitialized memory.  Since bytes accessed by ath9k_htc_rx_msg() is not known until ath9k_htc_rx_msg() is called, it would be difficult to check minimal valid pkt_len at \u0022if (pkt_len \u003E 2 * MAX_RX_BUF_SIZE) {\u0022 line in ath9k_hif_usb_rx_stream().  We have two choices. One is to workaround by adding __GFP_ZERO so that ath9k_htc_rx_msg() sees 0 if pkt_len is invalid. The other is to let ath9k_htc_rx_msg() validate pkt_len before accessing. This patch chose the latter.  Note that I\u0027m not sure threshold condition is correct, for I can\u0027t find details on possible packet length used by this protocol.",
  "published": "2025-12-24T11:15:51Z",
  "severity": "",
  "epss": 0.00215,
  "epssPercentile": 0.1198,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.0.3-1",
      "fix": "DEBIAN-CVE-2022-50709",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50709",
      "released": "2025-12-24T11:15:51Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.3-1",
      "fix": "DEBIAN-CVE-2022-50709",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50709",
      "released": "2025-12-24T11:15:51Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.3-1",
      "fix": "DEBIAN-CVE-2022-50709",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50709",
      "released": "2025-12-24T11:15:51Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}