CVE-2026-23082

Summary

In the Linux kernel, the following vulnerability has been resolved:

can: gs_usb: gs_usb_receive_bulk_callback(): unanchor URL on usb_submit_urb() error

In commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak"), the URB was re-anchored before usb_submit_urb() in gs_usb_receive_bulk_callback() to prevent a leak of this URB during cleanup.

However, this patch did not take into account that usb_submit_urb() could fail. The URB remains anchored and usb_kill_anchored_urbs(&parent->rx_submitted) in gs_can_close() loops infinitely since the anchor list never becomes empty.

To fix the bug, unanchor the URB when an usb_submit_urb() error occurs, also print an info message.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/da01de754e455e2598a7f1ce4ff2078c4f0ecde1
• https://git.kernel.org/stable/c/aa8a8866c533a150be4763bcb27993603bd5426c
• https://git.kernel.org/stable/c/ce4352057fc5a986c76ece90801b9755e7c6e56c
• https://git.kernel.org/stable/c/c610b550ccc0438d456dfe1df9f4f36254ccaae3
• https://git.kernel.org/stable/c/c3edc14da81a8d8398682f6e4ab819f09f37c0b7
• https://git.kernel.org/stable/c/79a6d1bfe1148bc921b8d7f3371a7fbce44e30f7

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