Summary
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 · 22.04 LTS 22.04:LTS | postfix | 3.6.4-1ubuntu1.4 |
| Ubuntu · 24.04 LTS 24.04:LTS | postfix | 3.8.6-1ubuntu0.1 |
| Ubuntu · 25.10 | postfix | 3.10.2-1ubuntu2.1 |
| Ubuntu · 26.04 LTS 26.04:LTS | postfix | 3.10.6-4ubuntu2.1 |
References
-
report
https://ubuntu.com/security/CVE-2026-43964