Add partition check

Author: bcoles

modules/exploits/linux/local/glibc_origin_expansion_priv_esc.rb

@@ -130,6 +130,14 @@ def exploit
       fail_with Failure::NotVulnerable, 'Target is not vulnerable'
     end
 
+    suid_partition = cmd_exec "df -P -- '#{suid_exe_path}' | awk 'NR==2 {print $1}'"
+    base_partition = cmd_exec "df -P -- '#{base_dir}' | awk 'NR==2 {print $1}'"
+    if suid_partition == base_partition
+      vprint_good "'#{suid_exe_path}' and '#{base_dir}' are located on the same partition"
+    else
+      print_warning "'#{suid_exe_path}' and '#{base_dir}' are not located on the same partition"
+    end
+
     payload_name = ".#{rand_text_alphanumeric rand(5..10)}"
     payload_path = "#{base_dir}/#{payload_name}"