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 v4.9.337 by commit 0f1a48994b3e516d5c7fd5d12204fdba7a604771. For more details please see the references link.