PostgreSQL -- minor security problems.

PostgreSQL project reports:

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.