CVE-2026-23058

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23058
In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: ems_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 ems_usb_open(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback ems_usb_read_bulk_callback(), the URBs are processed and resubmitted. In ems_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 ems_usb_close(). Fix the memory leak by anchoring the URB in the ems_usb_read_bulk_callback() to the dev->rx_submitted anchor.
CVSS

No CVSS.

References
Link Resource
https://git.kernel.org/stable/c/0ce73a0eb5a27070957b67fd74059b6da89cc516
https://git.kernel.org/stable/c/46a191ff7eeec33a2ccb2a1bfea34e18fbc5dc1a
https://git.kernel.org/stable/c/61e6d3674c3d1da1475dc207b3e75c55d678d18e
https://git.kernel.org/stable/c/68c62b3e53901846b5f68c5a8bade72a5d9c0b87
https://git.kernel.org/stable/c/e2c71030dc464d437110bcfb367c493fd402bddb
https://git.kernel.org/stable/c/e9410fdd4d5f7eaa6526d8c80e83029d7c86a8e8
https://git.kernel.org/stable/c/f48eabd15194b216030b32445f44230df95f5fe0
Configurations

No configuration.

History

15 Apr 2026, 00:35

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: can: ems_usb: ems_usb_read_bulk_callback(): corregir fuga de memoria de URB Corregir fuga de memoria similar a la del commit 7352e1d5932a ('can: gs_usb: gs_usb_receive_bulk_callback(): corregir fuga de memoria de URB'). En ems_usb_open(), los URB para transferencias USB de entrada son asignados, añadidos al ancla dev->rx_submitted y enviados. En la función de devolución de llamada completa ems_usb_read_bulk_callback(), los URB son procesados y reenviados. En ems_usb_close() los URB son liberados llamando a usb_kill_anchored_urbs(&dev->rx_submitted). Sin embargo, esto no tiene en cuenta que el framework USB desancla el URB antes de que se llame a la función completa. Esto significa que una vez que un URB de entrada ha sido completado, ya no está anclado y finalmente no es liberado en ems_usb_close(). Corregir la fuga de memoria anclando el URB en la ems_usb_read_bulk_callback() al ancla dev->rx_submitted.

06 Feb 2026, 17:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/61e6d3674c3d1da1475dc207b3e75c55d678d18e -
  • () https://git.kernel.org/stable/c/e2c71030dc464d437110bcfb367c493fd402bddb -
  • () https://git.kernel.org/stable/c/f48eabd15194b216030b32445f44230df95f5fe0 -

04 Feb 2026, 17:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-04 17:16

Updated : 2026-04-15 00:35

NVD link : CVE-2026-23058

Mitre link : CVE-2026-23058

CVE.ORG link : CVE-2026-23058

JSON object : View

Products Affected

No product.

CWE

No CWE.