Updating with SEb's comments

Signed-off-by: Mary Anthony <mary@docker.com>

docs/userguide/dockervolumes.md

@@ -145,10 +145,7 @@ Because of [limitations in the `mount`
 function](http://lists.linuxfoundation.org/pipermail/containers/2015-April/
 035788.html), moving subdirectories within the host's source directory can give
 access from the container to the host's file system. This requires a malicious
-user on the host with root access or with access to the Docker socket. Access to
-the Docker socket is equivalent to being privileged/root on the host. If your
-systems defines a `docker` group, be aware all its members have the necessary
-privileges to exploit this.
+user with access to the mounted directory on the host. 
 
 >**Note**: The host directory is, by its nature, host-dependent. For this
 >reason, you can't mount a host directory from `Dockerfile` because built images