RHSA-2026:34043: Important: postgresql:12 security update

Published Jul 1, 2026
·
Updated

Important: postgresql:12 security update

Other sources

PostgreSQL is an advanced object-relational database management system (DBMS).Security Fix(es): postgresql: PostgreSQL: Operating system account hijack via symlink following in pgbasebackup and pgrewind (CVE-2026-6475) postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory (CVE-2026-6477) 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

68 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux Server - TUS
redhat/pgaudit<1.4.0-5.module+el8.5.0+11354+78b3c9c5
1.4.0-5.module+el8.5.0+11354+78b3c9c5
redhat/postgres-decoderbufs<0.10.0-2.module+el8.5.0+11354+78b3c9c5
0.10.0-2.module+el8.5.0+11354+78b3c9c5
redhat/postgresql<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/pgaudit<1.4.0-5.module+el8.5.0+11354+78b3c9c5
1.4.0-5.module+el8.5.0+11354+78b3c9c5
redhat/pgaudit-debuginfo<1.4.0-5.module+el8.5.0+11354+78b3c9c5
1.4.0-5.module+el8.5.0+11354+78b3c9c5
redhat/pgaudit-debugsource<1.4.0-5.module+el8.5.0+11354+78b3c9c5
1.4.0-5.module+el8.5.0+11354+78b3c9c5
redhat/postgres-decoderbufs<0.10.0-2.module+el8.5.0+11354+78b3c9c5
0.10.0-2.module+el8.5.0+11354+78b3c9c5
redhat/postgres-decoderbufs-debuginfo<0.10.0-2.module+el8.5.0+11354+78b3c9c5
0.10.0-2.module+el8.5.0+11354+78b3c9c5
redhat/postgres-decoderbufs-debugsource<0.10.0-2.module+el8.5.0+11354+78b3c9c5
0.10.0-2.module+el8.5.0+11354+78b3c9c5
redhat/postgresql<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-contrib<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-contrib-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-debugsource<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-docs<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-docs-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-plperl<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-plperl-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-plpython3<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-plpython3-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-pltcl<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-pltcl-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-server<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-server-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-server-devel<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-server-devel-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-static<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-test<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-test-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-test-rpm-macros<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-upgrade<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-upgrade-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-upgrade-devel<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-upgrade-devel-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/pgaudit<1.4.0-5.module+el8.5.0+11354+78b3c9c5
1.4.0-5.module+el8.5.0+11354+78b3c9c5
redhat/pgaudit-debuginfo<1.4.0-5.module+el8.5.0+11354+78b3c9c5
1.4.0-5.module+el8.5.0+11354+78b3c9c5
redhat/pgaudit-debugsource<1.4.0-5.module+el8.5.0+11354+78b3c9c5
1.4.0-5.module+el8.5.0+11354+78b3c9c5
redhat/postgres-decoderbufs<0.10.0-2.module+el8.5.0+11354+78b3c9c5
0.10.0-2.module+el8.5.0+11354+78b3c9c5
redhat/postgres-decoderbufs-debuginfo<0.10.0-2.module+el8.5.0+11354+78b3c9c5
0.10.0-2.module+el8.5.0+11354+78b3c9c5
redhat/postgres-decoderbufs-debugsource<0.10.0-2.module+el8.5.0+11354+78b3c9c5
0.10.0-2.module+el8.5.0+11354+78b3c9c5
redhat/postgresql<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-contrib<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-contrib-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-debugsource<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-docs<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-docs-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-plperl<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-plperl-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-plpython3<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-plpython3-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-pltcl<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-pltcl-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-server<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-server-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-server-devel<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-server-devel-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-static<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-test<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-test-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-upgrade<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-upgrade-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-upgrade-devel<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4
redhat/postgresql-upgrade-devel-debuginfo<12.22-1.module+el8.8.0+24458+21f81c54.4
12.22-1.module+el8.8.0+24458+21f81c54.4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 1.4.0-5.module+el8.5.0+11354+78b3c9c5
  2. Upgrade

    Upgrade redhat/postgres-decoderbufs to a version that resolves this vulnerability.

    Fixed in 0.10.0-2.module+el8.5.0+11354+78b3c9c5
  3. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  4. Upgrade

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

    Fixed in 1.4.0-5.module+el8.5.0+11354+78b3c9c5
  5. Upgrade

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

    Fixed in 1.4.0-5.module+el8.5.0+11354+78b3c9c5
  6. Upgrade

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

    Fixed in 0.10.0-2.module+el8.5.0+11354+78b3c9c5
  7. Upgrade

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

    Fixed in 0.10.0-2.module+el8.5.0+11354+78b3c9c5
  8. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  9. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  10. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  11. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  12. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  13. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  14. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  15. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  16. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  17. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  18. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  19. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  20. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  21. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  22. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  23. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  24. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  25. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  26. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  27. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  28. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  29. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  30. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  31. Upgrade

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

    Fixed in 12.22-1.module+el8.8.0+24458+21f81c54.4
  32. Compensating control

    Update PostgreSQL 12 per the referenced Red Hat advisory/apply-this-update guidance (includes fixes for CVE-2026-6477, CVE-2026-6478, CVE-2026-6473, and CVE-2026-6475).

Event History

Jul 1, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·06:15 AM
Data Sourced
via Red Hat·06:15 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:34043?

The severity of RHSA-2026:34043 is classified as high, with a CVSS score of 7.

2

What vulnerabilities are addressed in RHSA-2026:34043?

RHSA-2026:34043 addresses an operating system account hijacking vulnerability via symlink in pg_basebackup and pg_rewind, among others.

3

How do I fix RHSA-2026:34043?

To resolve RHSA-2026:34043, you need to apply the latest security update for PostgreSQL 12 as provided by Red Hat.

4

What are the consequences of not patching RHSA-2026:34043?

Failing to patch RHSA-2026:34043 can lead to potential exploitation of the hijacking vulnerability, compromising system security.

5

Which Red Hat packages are affected by RHSA-2026:34043?

Affected packages include redhat/postgresql, redhat/pgaudit, redhat/postgres-decoderbufs, and their respective debug info packages.

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