Summary
USN-8253-1 fixed a vulnerability in Postfix. This update provides the
corresponding fix for Postfix on Ubuntu 14.04 LTS, Ubuntu 16.04 LTS,
Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.
Original advisory details:
Kamil Frankowicz discovered that Postfix incorrectly handled certain
enhanced status codes. A remote attacker could possibly use this issue to
cause Postfix to crash, resulting in a denial of service.
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | postfix | 2.11.0-1ubuntu1.2+esm4 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | postfix | 3.1.0-3ubuntu0.4+esm4 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | postfix | 3.3.0-1ubuntu0.4+esm4 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | postfix | 3.4.13-0ubuntu1.4+esm1 |
References
-
report
https://ubuntu.com/security/CVE-2026-43964