FKIE_CVE-2026-23061

Vulnerability from fkie_nvd - Published: 2026-02-04 17:16 - Updated: 2026-03-13 21:28
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: kvaser_usb: kvaser_usb_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 kvaser_usb_set_{,data_}bittiming() -> kvaser_usb_setup_rx_urbs(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback kvaser_usb_read_bulk_callback(), the URBs are processed and resubmitted. In kvaser_usb_remove_interfaces() the URBs are freed by calling usb_kill_anchored_urbs(&dev->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 kvaser_usb_read_bulk_callback() to the dev->rx_submitted anchor.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/248e8e1a125fa875158df521b30f2cc7e27eeeaaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b1a593eab941c3f32417896cc7df564191f2482Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/40a3334ffda479c63e416e61ff086485e24401f7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7c308f7530bffafa994e0aa8dc651a312f4b9ff4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/94a7fc42e21c7d9d1c49778cd1db52de5df52a01Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c1b39fa24c140bc616f51fef4175c1743e2bb132Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d9d824582f2ec76459ffab449e9b05c7bc49645cPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
To clipboard 

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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: kvaser_usb: kvaser_usb_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 kvaser_usb_set_{,data_}bittiming() -\u003e kvaser_usb_setup_rx_urbs(), the\nURBs for USB-in transfers are allocated, added to the dev-\u003erx_submitted\nanchor and submitted. In the complete callback\nkvaser_usb_read_bulk_callback(), the URBs are processed and resubmitted. In\nkvaser_usb_remove_interfaces() the URBs are freed by calling\nusb_kill_anchored_urbs(\u0026dev-\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\nkvaser_usb_read_bulk_callback() to the dev-\u003erx_submitted anchor."
    },
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      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: kvaser_usb: kvaser_usb_read_bulk_callback(): corregir fuga de memoria de URB\n\nCorregir fuga de memoria similar a la del commit 7352e1d5932a (\u0027can: gs_usb: gs_usb_receive_bulk_callback(): corregir fuga de memoria de URB\u0027).\n\nEn kvaser_usb_set_{,data_}bittiming() -\u0026gt; kvaser_usb_setup_rx_urbs(), los URB para transferencias USB de entrada se asignan, se a\u00f1aden al ancla dev-\u0026gt;rx_submitted y se env\u00edan. En la funci\u00f3n de devoluci\u00f3n de llamada completa kvaser_usb_read_bulk_callback(), los URB se procesan y se reenv\u00edan. En kvaser_usb_remove_interfaces(), los URB se liberan llamando a usb_kill_anchored_urbs(\u0026amp;dev-\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 se libera en usb_kill_anchored_urbs().\n\nCorregir la fuga de memoria anclando el URB en kvaser_usb_read_bulk_callback() al ancla dev-\u0026gt;rx_submitted."
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  "id": "CVE-2026-23061",
  "lastModified": "2026-03-13T21:28:28.673",
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
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  "published": "2026-02-04T17:16:16.787",
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