CVE-2022-50497

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> binfmt_misc: fix shift-out-of-bounds in check_special_flags<br /> <br /> UBSAN reported a shift-out-of-bounds warning:<br /> <br /> left shift of 1 by 31 places cannot be represented in type &amp;#39;int&amp;#39;<br /> Call Trace:<br /> <br /> __dump_stack lib/dump_stack.c:88 [inline]<br /> dump_stack_lvl+0x8d/0xcf lib/dump_stack.c:106<br /> ubsan_epilogue+0xa/0x44 lib/ubsan.c:151<br /> __ubsan_handle_shift_out_of_bounds+0x1e7/0x208 lib/ubsan.c:322<br /> check_special_flags fs/binfmt_misc.c:241 [inline]<br /> create_entry fs/binfmt_misc.c:456 [inline]<br /> bm_register_write+0x9d3/0xa20 fs/binfmt_misc.c:654<br /> vfs_write+0x11e/0x580 fs/read_write.c:582<br /> ksys_write+0xcf/0x120 fs/read_write.c:637<br /> do_syscall_x64 arch/x86/entry/common.c:50 [inline]<br /> do_syscall_64+0x34/0x80 arch/x86/entry/common.c:80<br /> entry_SYSCALL_64_after_hwframe+0x63/0xcd<br /> RIP: 0033:0x4194e1<br /> <br /> Since the type of Node&amp;#39;s flags is unsigned long, we should define these<br /> macros with same type too.