Description
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.
Metrics
No CVSS score has been published yet.
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= d08e973a77d128b25e01a08c34d89593fdf222da, < 9c151898cc259a7784be60ba38664f42ede39b31; >= d08e973a77d128b25e01a08c34d89593fdf222da, < ec5ccc2af9e5b045671f3f604b57512feda8bcc5; >= d08e973a77d128b25e01a08c34d89593fdf222da, < f905bcfa971edb89e398c98957838d8c6381c0c7; >= d08e973a77d128b25e01a08c34d89593fdf222da, < 08624b7206ddb9148eeffc2384ebda2c47b6d1e9; >= d08e973a77d128b25e01a08c34d89593fdf222da, < 9f669a38ca70839229b7ba0f851820850a2fe1f7; >= d08e973a77d128b25e01a08c34d89593fdf222da, < 7352e1d5932a0e777e39fa4b619801191f57e603 |
| Linux | Linux | 3.16 |
| Siemens | RUGGEDCOM RST2428P | < V4.0 |
References
- https://git.kernel.org/stable/c/08624b7206ddb9148eeffc2384ebda2c47b6d1e9
- https://git.kernel.org/stable/c/7352e1d5932a0e777e39fa4b619801191f57e603
- https://git.kernel.org/stable/c/9c151898cc259a7784be60ba38664f42ede39b31
- https://git.kernel.org/stable/c/9f669a38ca70839229b7ba0f851820850a2fe1f7
- https://git.kernel.org/stable/c/ec5ccc2af9e5b045671f3f604b57512feda8bcc5
- https://git.kernel.org/stable/c/f905bcfa971edb89e398c98957838d8c6381c0c7
- https://cert-portal.siemens.com/productcert/html/ssa-253495.html
Timeline
- Published
- Jan 31, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Deferred