binfmtmisc: fix shift-out-of-bounds in checkspecial_flags
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.163 by commit dcbc51d31d0afbd45e830e3cf565a7b3ca7bf0d8. For more details please see the references link.