CVE-2022-50156 HID: cp2112: prevent a buffer overflow in cp2112_xfer()

In the Linux kernel, the following vulnerability has been resolved: HID: cp2112: prevent a buffer overflow in cp2112xfer Smatch warnings: drivers/hid/hid-cp2112.c:793 cp2112xfer error: memcpy 'data-block1' too small 33 vs 255 drivers/hid/hid-cp2112.c:793 cp2112xfer error: memcpy 'buf' too small 6...

CVE-2022-50156

CVE-2022-50156 affects the Linux kernel HID cp2112 driver (cp2112_xfer). The issue is a potential buffer overflow in memcpy when read_length (taken from data->block[0], user-controlled, 0-255) is not bounded, causing overflow of data->block[1] and buf. Patches have added an upper bound to r...