This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-16241 →
UBUNTU-CVE-2026-16241
Integer underflow in PostgreSQL ECPG allows a database server administrator to achieve temporary denial of service against the ECPG client via sending...
Original description
The description as published by the source.
Integer underflow in PostgreSQL ECPG allows a database server administrator to achieve temporary denial of service against the ECPG client via sending a bytea value lacking the mandatory prefix. The client overwrites a huge memory region with bytes outside attacker knowledge or control. This typically yields a simple SIGSEGV, but rare cases might achieve client-specific integrity impact via the write. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Ubuntu:Pro:14.04:LTS
postgresql-9.3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:16.04:LTS
postgresql-9.5
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:18.04:LTS
postgresql-10
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
postgresql-12
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
postgresql-14
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"14.24-0ubuntu0.22.04.1"}]}]
Ubuntu:24.04:LTS
postgresql-16
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.15-0ubuntu0.24.04.1"}]}]
Ubuntu:26.04:LTS
postgresql-18
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"18.6-0ubuntu0.26.04.1"}]}]
References
- advisory ubuntu.com
- report ubuntu.com
- report cve.org
- report postgresql.org
- report postgresql.org