RHSA-2026:50863HighCVSS 8.4

Red Hat Security Advisory: libpq security update

Published
August 5, 2026
Last Modified
September 30, 2026

🔗 CVE IDs covered (1)

CVE-2026-6477 →

📋 Description

CVE-2026-6477 — postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory

🎯 Affected products35

  • Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-0:16.14-0.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-0:16.14-0.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-0:16.14-0.el10_0.1.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-0:16.14-0.el10_0.1.src as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-0:16.14-0.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-debuginfo-0:16.14-0.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-debuginfo-0:16.14-0.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-debuginfo-0:16.14-0.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-debuginfo-0:16.14-0.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-debuginfo-0:16.14-0.el10_0.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-debuginfo-0:16.14-0.el10_0.1.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-debuginfo-0:16.14-0.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-debuginfo-0:16.14-0.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-debugsource-0:16.14-0.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-debugsource-0:16.14-0.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-debugsource-0:16.14-0.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-debugsource-0:16.14-0.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-debugsource-0:16.14-0.el10_0.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-debugsource-0:16.14-0.el10_0.1.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-debugsource-0:16.14-0.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-debugsource-0:16.14-0.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-devel-0:16.14-0.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-devel-0:16.14-0.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-devel-0:16.14-0.el10_0.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-devel-0:16.14-0.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-devel-debuginfo-0:16.14-0.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libpq-devel-debuginfo-0:16.14-0.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • libpq-devel-debuginfo-0:16.14-0.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • +5 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: Only connect to trusted PostgreSQL servers. Avoid using psql or pg_dump against untrusted or potentially compromised database servers.

🔗 References (4)