Summary
Guannan Wang, Zhanpeng Liu, Guancheng Li, and Emma Reuter
discovered that OpenVPN incorrectly handled suitably malformed
packets with valid tls-crypt-v2 keys. An attacker could possibly use
this issue to cause OpenVPN to crash, resulting in a denial of
service. (CVE-2026-35058)
Guannan Wang, Zhanpeng Liu, and Guancheng Li discovered that
OpenVPN had a race condition in the TLS handshake process that could
leak packet data from a previous handshake under certain
circumstances. An attacker could possibly use this issue to obtain
sensitive information. (CVE-2026-40215)
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 22.04 LTS 22.04:LTS | openvpn | 2.5.11-0ubuntu0.22.04.3 |
| Ubuntu · 24.04 LTS 24.04:LTS | openvpn | 2.6.19-0ubuntu0.24.04.2 |
| Ubuntu · 25.10 | openvpn | 2.6.19-0ubuntu0.25.10.2 |
| Ubuntu · 26.04 LTS 26.04:LTS | openvpn | 2.7.0-1ubuntu1.1 |