CVE-2026-74457

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

can: peak_usb: add bounds check for USB channel index

The channel control index ctrl_idx is derived from rx->len which comes

directly from a device USB payload. The mask 0x0f allows values 0-15, but

the array size of usb_if->dev[] is only 2. Values 2-15 cause heap

out-of-bounds read, eventually causing kernel panic in the IRQ context.

Add bounds checking for ctrl_idx before the array access in both

pcan_usb_pro_handle_canmsg() and pcan_usb_pro_handle_error().