kernel: vmwgfx: out-of-bounds write in vmw_kms_cursor_snoop

An out-of-bounds memory write vulnerability was found in the Linux kernel's vmwgfx driver in vmwkmscursorsnoop due to a missing check of a memcpy length. This flaw allows a local, unprivileged attacker with access to either the /dev/dri/card0 or /dev/dri/rendererD128 and able to issue an ioctl on...