FKIE_CVE-2026-23082

Vulnerability from fkie_nvd - Published: 2026-02-04 17:16 - Updated: 2026-04-18 09:16
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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. To fix the bug, unanchor the URB when an usb_submit_urb() error occurs, also print an info message.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/79a6d1bfe1148bc921b8d7f3371a7fbce44e30f7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aa8a8866c533a150be4763bcb27993603bd5426cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c3edc14da81a8d8398682f6e4ab819f09f37c0b7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c610b550ccc0438d456dfe1df9f4f36254ccaae3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce4352057fc5a986c76ece90801b9755e7c6e56cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/da01de754e455e2598a7f1ce4ff2078c4f0ecde1
Impacted products
Vendor Product Version
linux linux_kernel 6.12.67
linux linux_kernel 6.18.7
linux linux_kernel 6.19
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12.67:*:*:*:*:*:*:*",
              "matchCriteriaId": "59F27AC7-EC6E-439C-A4DE-3E0179CDFE1D",
              "vulnerable": true
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              "matchCriteriaId": "20B6C380-0FF3-4ECC-AA45-F055A5ECBFA1",
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  "cveTags": [],
  "descriptions": [
    {
      "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(\u0026parent-\u003erx_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() podr\u00eda fallar. El URB permanece anclado y usb_kill_anchored_urbs(\u0026amp;parent-\u0026gt;rx_submitted) en gs_can_close() entra en un bucle infinito ya que la lista de anclajes nunca queda vac\u00eda.\n\nPara corregir el error, desanclar el URB cuando ocurre un error de usb_submit_urb(), tambi\u00e9n imprimir un mensaje de informaci\u00f3n."
    }
  ],
  "id": "CVE-2026-23082",
  "lastModified": "2026-04-18T09:16:13.530",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-02-04T17:16:19.060",
  "references": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-835"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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