Land rapid7#9536, Add Ubuntu notes to documentation

Author: pbarry-r7

documentation/modules/exploit/linux/local/glibc_origin_expansion_priv_esc.md

@@ -19,7 +19,7 @@
 
   RHEL 5 is reportedly affected, but untested.
 
-  Some versions of `ld.so` hit a failed assertion in `dl_open_worker` causing exploitation to fail.
+  Some versions of `ld.so`, such as the version shipped with Ubuntu 14, hit a failed assertion in `dl_open_worker` causing exploitation to fail.
 
 
 ## Verification Steps

modules/exploits/linux/local/glibc_origin_expansion_priv_esc.rb

@@ -37,8 +37,9 @@ def initialize(info = {})
         This module has been tested successfully on glibc version 2.5 on CentOS
         5.4 (x86_64), 2.5 on CentOS 5.5 (x86_64) and 2.12 on Fedora 13 (i386).
 
-        RHEL 5 is reportedly affected, but untested. Some versions of ld.so
-        hit a failed assertion in dl_open_worker causing exploitation to fail.
+        RHEL 5 is reportedly affected, but untested. Some versions of ld.so,
+        such as the version shipped with Ubuntu 14, hit a failed assertion
+        in dl_open_worker causing exploitation to fail.
       },
       'License'        => MSF_LICENSE,
       'Author'         =>