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().
References
- https://git.kernel.org/stable/c/0149fdb50a30944827acf9600a2cc44de0325a7f
- https://git.kernel.org/stable/c/1acab790b7cecd4e144d1d18bdfe549e282f6b0b
- https://git.kernel.org/stable/c/39132f166ca8ce00ae60d8a9068e06a60943cc4b
- https://git.kernel.org/stable/c/825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f
- https://git.kernel.org/stable/c/f97b7e5e1cdaae15cd95b3a360028c7929664969