RHSA-2026:49521: Important: postgresql security update

Published Aug 3, 2026
·
Updated

Important: postgresql security update

Other sources

PostgreSQL is an advanced object-relational database management system (DBMS).Security Fix(es): postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory (CVE-2026-6477) postgresql: PostgreSQL: Arbitrary code execution vulnerability in 'refint' module (CVE-2026-6637) postgresql: PostgreSQL: Credential recovery via covert timing channel in MD5 password comparison (CVE-2026-6478) postgresql: integer overflow can cause an undersized allocation and an out-of-bounds write (CVE-2026-6473) 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.

— Red Hat

Affected Software

40 affected componentsFixes available
Red Hat Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)
redhat/postgresql<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-contrib<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-debuginfo<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-debuginfo<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-devel<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-devel<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-docs<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-libs<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-libs<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-plperl<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-plpython<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-pltcl<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-server<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-static<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-static<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-test<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-upgrade<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-contrib<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-docs<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-plperl<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-plpython<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-pltcl<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-server<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-test<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-upgrade<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-contrib<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-debuginfo<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-devel<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-docs<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-libs<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-plperl<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-plpython<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-pltcl<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-server<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-static<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-test<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6
redhat/postgresql-upgrade<9.2.24-9.el7_9.6
9.2.24-9.el7_9.6

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/postgresql to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  2. Upgrade

    Upgrade redhat/postgresql-contrib to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  3. Upgrade

    Upgrade redhat/postgresql-debuginfo to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  4. Upgrade

    Upgrade redhat/postgresql-devel to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  5. Upgrade

    Upgrade redhat/postgresql-docs to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  6. Upgrade

    Upgrade redhat/postgresql-libs to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  7. Upgrade

    Upgrade redhat/postgresql-plperl to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  8. Upgrade

    Upgrade redhat/postgresql-plpython to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  9. Upgrade

    Upgrade redhat/postgresql-pltcl to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  10. Upgrade

    Upgrade redhat/postgresql-server to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  11. Upgrade

    Upgrade redhat/postgresql-static to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  12. Upgrade

    Upgrade redhat/postgresql-test to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  13. Upgrade

    Upgrade redhat/postgresql-upgrade to a version that resolves this vulnerability.

    Fixed in 9.2.24-9.el7_9.6
  14. Upgrade

    Upgrade postgresql to a version that resolves this vulnerability.

    Patch CVE-2026-6637
  15. Upgrade

    Upgrade postgresql to a version that resolves this vulnerability.

    Patch CVE-2026-6478
  16. Upgrade

    Upgrade postgresql to a version that resolves this vulnerability.

    Patch CVE-2026-6473
  17. Upgrade

    Upgrade postgresql to a version that resolves this vulnerability.

    Patch CVE-2026-6477

Event History

Aug 3, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·12:56 AM
Data Sourced
via Red Hat·12:56 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:49521?

The severity of RHSA-2026:49521 is classified as high, with a score of 7.

2

How do I fix RHSA-2026:49521?

To fix RHSA-2026:49521, you should apply the recommended security update for PostgreSQL provided by Red Hat.

3

What software is affected by RHSA-2026:49521?

RHSA-2026:49521 affects Red Hat Enterprise Linux Server under Extended Life Cycle Support for IBM z Systems.

4

What is the nature of the vulnerability in RHSA-2026:49521?

The vulnerability in RHSA-2026:49521 relates to important security updates necessary for PostgreSQL.

5

When was RHSA-2026:49521 published?

RHSA-2026:49521 was published on August 3, 2026.

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