Security Fixes for RLS, BRIN
This release closes security hole CVE-2016-2193
(https://access.redhat.com/security/cve/CVE-2016-2193), where a query
plan might get reused for more than one ROLE in the same session.
This could cause the wrong set of Row Level Security (RLS) policies to
be used for the query.
The update also fixes CVE-2016-3065
(https://access.redhat.com/security/cve/CVE-2016-3065), a server crash
bug triggered by using `pageinspect` with BRIN index pages. Since an
attacker might be able to expose a few bytes of server memory, this
crash is being treated as a security issue.