There has been a growing concern regarding Privileged Identity Manager support for the latest RedHat releases. Currently, 6.7 the newest RedHat release supported by PIM 12.9 SP2. The upcoming release (14.0) will add support up to RedHat 7.2 for server components. It is currently scheduled to be released in the first half of 2017.
You can find the PIM Server Compatibility Matrix in the link below.