RHSA-2026:57633: Important: postgresql security update

Published Aug 20, 2026
·
Updated

Important: postgresql security update

Other sources

PostgreSQL is an advanced object-relational database management system (DBMS).Security Fix(es): postgresql: PostgreSQL: Denial of Service via uncontrolled recursion in SSL/GSS negotiation (CVE-2026-6479) 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

93 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux Server - AUS
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
redhat/postgresql<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-contrib<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-contrib-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-debugsource<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-docs-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plperl<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plperl-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plpython3<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plpython3-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-pltcl<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-pltcl-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-private-libs<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-private-libs-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-server<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-server-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-server-devel-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-test-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-upgrade<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-upgrade-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-upgrade-devel-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-contrib<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-contrib-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-debugsource<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-docs-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plperl<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plperl-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plpython3<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plpython3-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-pltcl<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-pltcl-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-private-libs<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-private-libs-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-server<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-server-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-server-devel-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-test-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-upgrade<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-upgrade-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-upgrade-devel-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-contrib<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-contrib-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-debugsource<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-docs-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-plperl<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-plperl-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-plpython3<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-plpython3-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-pltcl<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-pltcl-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-private-libs<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-private-libs-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-server<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-server-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-server-devel-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-test-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-upgrade<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-upgrade-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-upgrade-devel-debuginfo<13.23-1.el9_2.4.aa
13.23-1.el9_2.4.aa
redhat/postgresql-contrib<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-contrib-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-debugsource<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-docs-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plperl<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plperl-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plpython3<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-plpython3-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-pltcl<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-pltcl-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-private-libs<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-private-libs-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-server<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-server-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-server-devel-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-test-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-upgrade<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-upgrade-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4
redhat/postgresql-upgrade-devel-debuginfo<13.23-1.el9_2.4
13.23-1.el9_2.4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  2. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  3. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  4. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  5. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  6. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  7. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  8. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  9. Upgrade

    Upgrade redhat/postgresql-plpython3 to a version that resolves this vulnerability.

    Fixed in 13.23-1.el9_2.4
  10. Upgrade

    Upgrade redhat/postgresql-plpython3-debuginfo to a version that resolves this vulnerability.

    Fixed in 13.23-1.el9_2.4
  11. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  12. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  13. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  14. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  15. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  16. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  17. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  18. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  19. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  20. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  21. Upgrade

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

    Fixed in 13.23-1.el9_2.4
  22. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  23. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  24. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  25. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  26. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  27. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  28. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  29. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  30. Upgrade

    Upgrade redhat/postgresql-plpython3 to a version that resolves this vulnerability.

    Fixed in 13.23-1.el9_2.4.aa
  31. Upgrade

    Upgrade redhat/postgresql-plpython3-debuginfo to a version that resolves this vulnerability.

    Fixed in 13.23-1.el9_2.4.aa
  32. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  33. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  34. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  35. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  36. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  37. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  38. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  39. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  40. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  41. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  42. Upgrade

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

    Fixed in 13.23-1.el9_2.4.aa
  43. Compensating control

    Apply the postgresql security update referenced by the advisory (PostgreSQL: Denial of Service via uncontrolled recursion in SSL/GSS negotiation, CVE-2026-6479).

Event History

Aug 20, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·05:27 PM
Data Sourced
via Red Hat·05:27 PM
Severity

Frequently Asked Questions

1

What kind of impact can exploitation cause?

The issue can cause a denial of service through uncontrolled recursion during SSL/GSS negotiation. The provided information does not describe data exposure, privilege escalation, or code execution.

2

Which installed packages are covered by this update?

The advisory lists redhat/postgresql and related packages including postgresql-contrib, debuginfo, debugsource, docs-debuginfo, plperl, and plperl-debuginfo.

3

What mitigation is provided if patching cannot be completed immediately?

No temporary mitigation or workaround is provided in the advisory data. The listed remediation is the PostgreSQL security update.

Company

Resources

Contact

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