GHSA-W929-9WQ4-XRMP

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-11 18:31
VLAI
Details

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

wifi: libertas: fix WARNING in usb_tx_block

The function usb_tx_block() submits cardp->tx_urb without ensuring that any previous transmission on this URB has completed. If a second call occurs while the URB is still active (e.g. during rapid firmware loading), usb_submit_urb() detects the active state and triggers a warning: 'URB submitted while active'.

Fix this by enforcing serialization: call usb_kill_urb() before submitting the new request. This ensures the URB is idle and safe to reuse.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-43255"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T12:16:46Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas: fix WARNING in usb_tx_block\n\nThe function usb_tx_block() submits cardp-\u003etx_urb without ensuring that\nany previous transmission on this URB has completed. If a second call\noccurs while the URB is still active (e.g. during rapid firmware loading),\nusb_submit_urb() detects the active state and triggers a warning:\n\u0027URB submitted while active\u0027.\n\nFix this by enforcing serialization: call usb_kill_urb() before\nsubmitting the new request. This ensures the URB is idle and safe to reuse.",
  "id": "GHSA-w929-9wq4-xrmp",
  "modified": "2026-05-11T18:31:36Z",
  "published": "2026-05-06T12:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43255"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0bb7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3308c7504e093b22e91a4468470309cee2e26b83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e9fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5bfb25495e391a1be0db94b15715174fa06b93a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206232"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b82073564373e68c6ae3a96039fae14cd002a496"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d66676e6ca96bf8680f869a9bd6573b26c634622"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc188b44547dea4e7350833171982a6312befde9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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