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CVE-2026-23082

Status: ModifiedMedium (5.5)—

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

can: gs_usb: gs_usb_receive_bulk_callback(): unanchor URL on usb_submit_urb() error

In commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak"), the URB was re-anchored before usb_submit_urb() in gs_usb_receive_bulk_callback() to prevent a leak of this URB during cleanup.

However, this patch did not take into account that usb_submit_urb() could fail. The URB remains anchored and usb_kill_anchored_urbs(&parent->rx_submitted) in gs_can_close() loops infinitely since the anchor list never becomes empty.

Read full descriptionShow less

To fix the bug, unanchor the URB when an usb_submit_urb() error occurs, also print an info message.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Linux — Linux Kernel

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-23082",
  "cveTags": [],
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        "source": "nvd@nist.gov",
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          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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  "published": "2026-02-04T17:16:19.060",
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      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-835"
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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: gs_usb: gs_usb_receive_bulk_callback(): unanchor URL on usb_submit_urb() error\n\nIn commit 7352e1d5932a (\"can: gs_usb: gs_usb_receive_bulk_callback(): fix\nURB memory leak\"), the URB was re-anchored before usb_submit_urb() in\ngs_usb_receive_bulk_callback() to prevent a leak of this URB during\ncleanup.\n\nHowever, this patch did not take into account that usb_submit_urb() could\nfail. The URB remains anchored and\nusb_kill_anchored_urbs(&parent->rx_submitted) in gs_can_close() loops\ninfinitely since the anchor list never becomes empty.\n\nTo fix the bug, unanchor the URB when an usb_submit_urb() error occurs,\nalso print an info message."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: gs_usb: gs_usb_receive_bulk_callback(): desanclar URL en error de usb_submit_urb()\n\nEn el commit 7352e1d5932a (\"can: gs_usb: gs_usb_receive_bulk_callback(): corregir fuga de memoria de URB\"), el URB fue re-anclado antes de usb_submit_urb() en gs_usb_receive_bulk_callback() para prevenir una fuga de este URB durante la limpieza.\n\nSin embargo, este parche no tuvo en cuenta que usb_submit_urb() podría fallar. El URB permanece anclado y usb_kill_anchored_urbs(&parent->rx_submitted) en gs_can_close() entra en un bucle infinito ya que la lista de anclajes nunca queda vacía.\n\nPara corregir el error, desanclar el URB cuando ocurre un error de usb_submit_urb(), también imprimir un mensaje de información."
    }
  ],
  "lastModified": "2026-06-17T10:20:50.033",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}