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Vulnerabilities CVE-2026-74457

CVE-2026-74457

None
Open
TLP:CLEAR

can: peak_usb: add bounds check for USB channel index

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Description

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().

Details

Confidence
90%
Published
Aug 15, 2026
Last Modified
Aug 15, 2026
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