CVE-2025-68343 - can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header

CVE-2025-68343 - can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header

https://cvefeed.io/rssfeed/latest.atom / Tue, 12/23/2025 - 16:54
CVE ID : CVE-2025-68343
Published : Dec. 23, 2025, 2:16 p.m. | 33 minutes ago
Description : 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.
Severity: 0.0 | NA
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