CVE-2025-68343: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header The driver expects to receive a struct gs_host_frame in gs_usb_receive_bulk_callback(). Use struct_group to describe the header of the struct gs_host_frame and check that we have at least received the header before accessing any members of it. To resubmit the URB, do not dereference the pointer chain "dev->parent->hf_size_rx" but use "parent->hf_size_rx" instead. Since "urb->context" contains "parent", it is always defined, while "dev" is not defined if the URB it too short.

Affected products

• Linux Linux: from 3.16, before 6.1.159 (fixed in 6.1.159); from 6.2, before 6.6.119 (fixed in 6.6.119); from 6.7, before 6.12.61 (fixed in 6.12.61); from 6.13, before 6.17.11 (fixed in 6.17.11)

Published 2025-12-23. Last modified 2026-06-17.