CVE-2018-10925: Canonical Ubuntu Linux

High severity, CVSS 8.1. EPSS: 2.2% chance of exploitation in the next 30 days.

It was discovered that PostgreSQL versions before 10.5, 9.6.10, 9.5.14, 9.4.19, and 9.3.24 failed to properly check authorization on certain statements involved with "INSERT ... ON CONFLICT DO UPDATE". An attacker with "CREATE TABLE" privileges could exploit this to read arbitrary bytes server memory. If the attacker also had certain "INSERT" and limited "UPDATE" privileges to a particular table, they could exploit this to update other columns in the same table.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only
• Debian Debian Linux: version 9.0 only
• PostgreSQL PostgreSQL: from 9.5.0, before 9.5.14 (fixed in 9.5.14); from 9.6.0, before 9.6.10 (fixed in 9.6.10); from 10.0, before 10.5 (fixed in 10.5)

Published 2018-08-09. Last modified 2026-06-17.