GHSA-M2J8-J8PH-HXXH

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: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb()

It is possible that skb is freed in ath9k_htc_rx_msg(), then usb_submit_urb() fails and we try to free skb again. It causes use-after-free bug. Moreover, if alloc_skb() fails, urb->context becomes NULL but rx_buf is not freed and there can be a memory leak.

The patch removes unnecessary nskb and makes skb processing more clear: it is supposed that ath9k_htc_rx_msg() either frees old skb or passes its managing to another callback function.

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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50829"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:15:57Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb()\n\nIt is possible that skb is freed in ath9k_htc_rx_msg(), then\nusb_submit_urb() fails and we try to free skb again. It causes\nuse-after-free bug. Moreover, if alloc_skb() fails, urb-\u003econtext becomes\nNULL but rx_buf is not freed and there can be a memory leak.\n\nThe patch removes unnecessary nskb and makes skb processing more clear: it\nis supposed that ath9k_htc_rx_msg() either frees old skb or passes its\nmanaging to another callback function.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.",
  "id": "GHSA-m2j8-j8ph-hxxh",
  "modified": "2025-12-30T15:30:27Z",
  "published": "2025-12-30T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50829"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c8dd2ea4b419da96ab4953e4967e9363e2f8a4f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/355f16f756aad0c95cdaa0c14a34ab4137d32815"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/53b9bb1a00c4285ee7f58a11129dbea015db61bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5e8751a977a49a6e00cce1a8da5ca16da83f9c8c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/71fc0ad671a62c494d2aec731baeabd3bfe6c95d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/988bd27de2484faf17afe0408db2e3d9e5ac61fc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98d9172822dc6f38138333941984bd759a89d419"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd95f2239fc846795fc926787c3ae0ca701c9840"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f127c2b4c967025e5c3a4ce7e13b79135d46a33d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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