FKIE_CVE-2026-23075

Vulnerability from fkie_nvd - Published: 2026-02-04 17:16 - Updated: 2026-03-18 17:16
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: esd_usb: esd_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 esd_usb_open(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback esd_usb_read_bulk_callback(), the URBs are processed and resubmitted. In esd_usb_close() 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 esd_usb_close(). Fix the memory leak by anchoring the URB in the esd_usb_read_bulk_callback() to the dev->rx_submitted anchor.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a4391bdc6c8357242f62f22069c865b792406b3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/92d26ce07ac3b7a850dc68c8d73d487b39c39b33Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/93b34d4ba7266030801a509c088ac77c0d7a12e9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9d1807b442fc3286b204f8e59981b10e743533cePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9503ae43256e80db5cba9d449b238607164c51dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/adec5e1f9c99fe079ec4c92cca3f1109a3e257c3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dc934d96673992af8568664c1b58e13eb164010dPatch
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: esd_usb: esd_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 esd_usb_open(), the URBs for USB-in transfers are allocated, added to\nthe dev-\u003erx_submitted anchor and submitted. In the complete callback\nesd_usb_read_bulk_callback(), the URBs are processed and resubmitted. In\nesd_usb_close() 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 esd_usb_close().\n\nFix the memory leak by anchoring the URB in the\nesd_usb_read_bulk_callback() to the dev-\u003erx_submitted anchor."
    },
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      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: esd_usb: esd_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 esd_usb_open(), los URB para transferencias USB de entrada son asignados, a\u00f1adidos al ancla dev-\u0026gt;rx_submitted y enviados. En la funci\u00f3n de devoluci\u00f3n de llamada completa esd_usb_read_bulk_callback(), los URB son procesados y reenviados. En esd_usb_close(), los URB son liberados 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 es liberado en esd_usb_close().\n\nCorregir la fuga de memoria anclando el URB en esd_usb_read_bulk_callback() al ancla dev-\u0026gt;rx_submitted."
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  "id": "CVE-2026-23075",
  "lastModified": "2026-03-18T17:16:12.083",
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          "attackVector": "LOCAL",
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          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
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        "impactScore": 3.6,
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  "published": "2026-02-04T17:16:18.227",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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