PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory
Summary
PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory. Red Hat rates this important (CVSS 8.4). Weakness: CWE-120. Affected package(s): postgresql, postgresql:12, postgresql:18, postgresql:15, libpq, postgresql16. Resolved in Red Hat advisory RHSA-2026:26561 — update the affected packages (`sudo dnf update`).
- postgresql-0:13.23-1.el9_4.2
- postgresql:12-8080020260626093604.63b34585
- postgresql-0:13.23-1.el9_2.2
- postgresql:18-9080020260605125734.rhel9
- postgresql:15-9040020260616071806.rhel9
- postgresql-0:13.23-1.el9_6.2
- libpq-0:13.23-1.el8_8.1
- postgresql:15-9080020260605124405.rhel9
- postgresql:15-9060020260622062902.rhel9
- postgresql-0:13.23-3.el9_8
- postgresql16-0:16.14-1.el10_2
- postgresql:15-8100020260605152259.489197e6
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
- RHSA-2026:26561
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:26561 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.