Red Hat alert RHSA-2026:0456-01 (postgresql16)

An update for postgresql16 is now available for Red Hat Enterprise Linux 10.0
Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of
Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

PostgreSQL is an advanced Object-Relational database management system
(DBMS). The base postgresql package contains the client programs that you'll
need to access a PostgreSQL DBMS server, as well as HTML documentation for
the whole system.  These client programs can be located on the same machine
as the PostgreSQL server, or on a remote machine that accesses a PostgreSQL
server over a network connection.  The PostgreSQL server can be found in the
postgresql-server sub-package.

Security Fix(es):

* postgresql: CREATE STATISTICS does not check for schema CREATE privilege
(CVE-2025-12817)

* postgresql: libpq undersizes allocations, via integer wraparound
(CVE-2025-12818)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

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Original: https://access.redhat.com/security/data/csaf/v2/advisories/2026/rhsa-2026_0456.json