add arch check

modules/exploits/linux/local/ufo_privilege_escalation.rb

@@ -137,6 +137,13 @@ class MetasploitModule < Msf::Exploit::Local
     end
     vprint_good 'smap not present'
 
+    arch = kernel_hardware
+    unless arch.include? 'x86_64'
+      vprint_error "System architecture #{arch} is not supported"
+      return CheckCode::Safe
+    end
+    vprint_good "System architecture #{arch} is supported"
+
     distro = cmd_exec('grep DISTRIB_CODENAME /etc/lsb-release').split('=')[1].to_s.downcase
     unless kernels.include? "\"#{distro}\", \"#{kernel_release}\""
       vprint_error "Kernel #{kernel_release} on #{distro} not supported"