CVE-2022-50497

In the Linux kernel, the following vulnerability has been resolved:

binfmtmisc: fix shift-out-of-bounds in checkspecial_flags

UBSAN reported a shift-out-of-bounds warning:

left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: <TASK> __dumpstack lib/dumpstack.c:88 [inline] dumpstacklvl+0x8d/0xcf lib/dumpstack.c:106 ubsanepilogue+0xa/0x44 lib/ubsan.c:151 _ubsanhandleshiftoutofbounds+0x1e7/0x208 lib/ubsan.c:322 checkspecialflags fs/binfmtmisc.c:241 [inline] createentry fs/binfmtmisc.c:456 [inline] bmregisterwrite+0x9d3/0xa20 fs/binfmtmisc.c:654 vfswrite+0x11e/0x580 fs/readwrite.c:582 ksyswrite+0xcf/0x120 fs/readwrite.c:637 dosyscallx64 arch/x86/entry/common.c:50 [inline] dosyscall64+0x34/0x80 arch/x86/entry/common.c:80 entrySYSCALL64afterhwframe+0x63/0xcd RIP: 0033:0x4194e1

Since the type of Node's flags is unsigned long, we should define these macros with same type too.