RHSA-2026:61255HighCVSS 7.5

Red Hat Security Advisory: postgresql:12 security update

Published
August 31, 2026
Last Modified
October 6, 2026

🔗 CVE IDs covered (1)

CVE-2026-6479 →

📋 Description

CVE-2026-6479 — postgresql: PostgreSQL: Denial of Service via uncontrolled recursion in SSL/GSS negotiation

🎯 Affected products70

  • Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • pgaudit-0:1.4.0-6.module+el8.4.0+11288+c193d6d7.src (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • pgaudit-0:1.4.0-6.module+el8.4.0+11288+c193d6d7.src (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • pgaudit-0:1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • pgaudit-0:1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • pgaudit-debuginfo-0:1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • pgaudit-debuginfo-0:1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • pgaudit-debugsource-0:1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • pgaudit-debugsource-0:1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • postgres-decoderbufs-0:0.10.0-2.module+el8.4.0+11288+c193d6d7.src (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • postgres-decoderbufs-0:0.10.0-2.module+el8.4.0+11288+c193d6d7.src (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • postgres-decoderbufs-0:0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • postgres-decoderbufs-0:0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • postgres-decoderbufs-debuginfo-0:0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • postgres-decoderbufs-debuginfo-0:0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • postgres-decoderbufs-debugsource-0:0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • postgres-decoderbufs-debugsource-0:0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • postgresql-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.src (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • postgresql-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.src (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • postgresql-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • postgresql-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • postgresql-contrib-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • postgresql-contrib-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • postgresql-contrib-debuginfo-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • postgresql-contrib-debuginfo-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • postgresql-debuginfo-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • postgresql-debuginfo-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • postgresql-debugsource-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • postgresql-debugsource-0:12.22-1.module+el8.4.0+24733+2481cd1e.5.x86_64 (postgresql:12) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • +40 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Upgrade to PostgreSQL 18.4, 17.10, 16.14, 15.18, or 14.23 (matching your major version) or later. Restricting network/socket access to trusted clients reduces exposure but does not eliminate the vulnerability.

🔗 References (4)