CVE-2026-23031 (GCVE-0-2026-23031)
Vulnerability from cvelistv5
Published
2026-01-31 11:42
Modified
2026-02-09 08:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak In gs_can_open(), the URBs for USB-in transfers are allocated, added to the parent->rx_submitted anchor and submitted. In the complete callback gs_usb_receive_bulk_callback(), the URB is processed and resubmitted. In gs_can_close() the URBs are freed by calling usb_kill_anchored_urbs(parent->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 gs_can_close(). Fix the memory leak by anchoring the URB in the gs_usb_receive_bulk_callback() to the parent->rx_submitted anchor.
References
Impacted products
Vendor Product Version
Linux Linux Version: d08e973a77d128b25e01a08c34d89593fdf222da
Version: d08e973a77d128b25e01a08c34d89593fdf222da
Version: d08e973a77d128b25e01a08c34d89593fdf222da
Version: d08e973a77d128b25e01a08c34d89593fdf222da
Version: d08e973a77d128b25e01a08c34d89593fdf222da
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/gs_usb.c"
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          "product": "Linux",
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          "vendor": "Linux",
          "versions": [
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              "version": "3.16"
            },
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              "status": "unaffected",
              "version": "0",
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              "version": "6.12.67",
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              "status": "unaffected",
              "version": "6.18.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
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      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak\n\nIn gs_can_open(), the URBs for USB-in transfers are allocated, added to the\nparent-\u003erx_submitted anchor and submitted. In the complete callback\ngs_usb_receive_bulk_callback(), the URB is processed and resubmitted. In\ngs_can_close() the URBs are freed by calling\nusb_kill_anchored_urbs(parent-\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 gs_can_close().\n\nFix the memory leak by anchoring the URB in the\ngs_usb_receive_bulk_callback() to the parent-\u003erx_submitted anchor."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-09T08:37:25.657Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ec5ccc2af9e5b045671f3f604b57512feda8bcc5"
        },
        {
          "url": "https://git.kernel.org/stable/c/f905bcfa971edb89e398c98957838d8c6381c0c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/08624b7206ddb9148eeffc2384ebda2c47b6d1e9"
        },
        {
          "url": "https://git.kernel.org/stable/c/9f669a38ca70839229b7ba0f851820850a2fe1f7"
        },
        {
          "url": "https://git.kernel.org/stable/c/7352e1d5932a0e777e39fa4b619801191f57e603"
        }
      ],
      "title": "can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23031",
    "datePublished": "2026-01-31T11:42:09.276Z",
    "dateReserved": "2026-01-13T15:37:45.942Z",
    "dateUpdated": "2026-02-09T08:37:25.657Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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