FKIE_CVE-2026-23031

Vulnerability from fkie_nvd - Published: 2026-01-31 12:16 - Updated: 2026-06-17 10:20
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/08624b7206ddb9148eeffc2384ebda2c47b6d1e9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7352e1d5932a0e777e39fa4b619801191f57e603
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9c151898cc259a7784be60ba38664f42ede39b31
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f669a38ca70839229b7ba0f851820850a2fe1f7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ec5ccc2af9e5b045671f3f604b57512feda8bcc5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f905bcfa971edb89e398c98957838d8c6381c0c7
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-253495.html
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/gs_usb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9c151898cc259a7784be60ba38664f42ede39b31",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "ec5ccc2af9e5b045671f3f604b57512feda8bcc5",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "f905bcfa971edb89e398c98957838d8c6381c0c7",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "08624b7206ddb9148eeffc2384ebda2c47b6d1e9",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "9f669a38ca70839229b7ba0f851820850a2fe1f7",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "7352e1d5932a0e777e39fa4b619801191f57e603",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/gs_usb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.16"
            },
            {
              "lessThan": "3.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.122",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.67",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "RUGGEDCOM RST2428P",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V4.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
    }
  ],
  "cveTags": [],
  "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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: gs_usb: gs_usb_receive_bulk_callback(): corregir fuga de memoria de URB\n\nEn gs_can_open(), los URB para transferencias USB de entrada son asignados, a\u00f1adidos al ancla parent-\u0026gt;rx_submitted y enviados. En la funci\u00f3n de devoluci\u00f3n de llamada completa gs_usb_receive_bulk_callback(), el URB es procesado y reenviado. En gs_can_close(), los URB son liberados llamando a usb_kill_anchored_urbs(parent-\u0026gt;rx_submitted).\n\nSin embargo, esto no tiene en cuenta que el framework USB desancla el URB antes de que se llame a la funci\u00f3n completa. Esto significa que una vez que un URB de entrada ha sido completado, ya no est\u00e1 anclado y finalmente no es liberado en gs_can_close().\n\nCorregir la fuga de memoria anclando el URB en gs_usb_receive_bulk_callback() al ancla parent-\u0026gt;rx_submitted."
    }
  ],
  "id": "CVE-2026-23031",
  "lastModified": "2026-06-17T10:20:44.640",
  "metrics": {},
  "published": "2026-01-31T12:16:06.413",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/08624b7206ddb9148eeffc2384ebda2c47b6d1e9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7352e1d5932a0e777e39fa4b619801191f57e603"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9c151898cc259a7784be60ba38664f42ede39b31"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9f669a38ca70839229b7ba0f851820850a2fe1f7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ec5ccc2af9e5b045671f3f604b57512feda8bcc5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f905bcfa971edb89e398c98957838d8c6381c0c7"
    },
    {
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-253495.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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