GHSA-MXQF-2H29-G694

Vulnerability from github – Published: 2026-02-04 18:30 – Updated: 2026-02-06 18:30
VLAI?
Details

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

can: usb_8dev: usb_8dev_read_bulk_callback(): fix URB memory leak

Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak").

In usb_8dev_open() -> usb_8dev_start(), the URBs for USB-in transfers are allocated, added to the priv->rx_submitted anchor and submitted. In the complete callback usb_8dev_read_bulk_callback(), the URBs are processed and resubmitted. In usb_8dev_close() -> unlink_all_urbs() the URBs are freed by calling usb_kill_anchored_urbs(&priv->rx_submitted).

However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in usb_kill_anchored_urbs().

Fix the memory leak by anchoring the URB in the usb_8dev_read_bulk_callback() to the priv->rx_submitted anchor.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23108"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-04T17:16:21Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: usb_8dev: usb_8dev_read_bulk_callback(): fix URB memory leak\n\nFix similar memory leak as in commit 7352e1d5932a (\"can: gs_usb:\ngs_usb_receive_bulk_callback(): fix URB memory leak\").\n\nIn usb_8dev_open() -\u003e usb_8dev_start(), the URBs for USB-in transfers are\nallocated, added to the priv-\u003erx_submitted anchor and submitted. In the\ncomplete callback usb_8dev_read_bulk_callback(), the URBs are processed and\nresubmitted. In usb_8dev_close() -\u003e unlink_all_urbs() the URBs are freed by\ncalling usb_kill_anchored_urbs(\u0026priv-\u003erx_submitted).\n\nHowever, this does not take into account that the USB framework unanchors\nthe URB before the complete function is called. This means that once an\nin-URB has been completed, it is no longer anchored and is ultimately not\nreleased in usb_kill_anchored_urbs().\n\nFix the memory leak by anchoring the URB in the\nusb_8dev_read_bulk_callback() to the priv-\u003erx_submitted anchor.",
  "id": "GHSA-mxqf-2h29-g694",
  "modified": "2026-02-06T18:30:31Z",
  "published": "2026-02-04T18:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23108"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07e9373739c6388af9d99797cdb2e79dbbcbe92b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59ff56992bba28051ad67cd8cc7b0edfe7280796"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60719661b4cbd7ffbed1a0e0fa3bbc82d8bd2be9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea4a98e924164586066b39f29bfcc7cc9da108cd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef6e608e5ee71eca0cd3475c737e684cef24f240"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7a980b3b8f80fe367f679da376cf76e800f9480"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/feb8243eaea7efd5279b19667d7189fd8654c87a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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