PostgreSQL Buffer Over-read Vulnerability - CVE-2026-6575

Buffer over-read in PostgreSQL function pg_restore_attribute_stats() accepts array values of unmatched length which causes query planning to read past end of one array. This allows a table maintainer to infer memory values past that array end. Within major version 18 minor versions before PostgreSQL 18.4 are affected. Versions before PostgreSQL 18 are unaffected.