- When the Pluggable Authentication Module (PAM) configuration includes the pam_fprintd module, PAM uses the glib2 functions where the dlclose() function is executed to unload the glib2 libraries. However, this method is not designed for multi-threaded applications. When a PAM operation was made, Directory Server on Red Hat Enterprise Linux 6 terminated unexpectedly during the shutdown phase because it attempted to unload the glib2 destructor, which had been previously unloaded by the fprintd service. This update applies a patch to fix this bug so that fprintd no longer unloads glib2 when pam_fprintd closes. As a result, the glib2 libraries are unloaded when Directory Server is closed and therefore the server shuts down gracefully.