Packages
- openvpn - virtual private network software
Details
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)
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)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 26.04 LTS resolute | openvpn – 2.7.0-1ubuntu1.1 | ||
| 25.10 questing | openvpn – 2.6.19-0ubuntu0.25.10.2 | ||
| 24.04 LTS noble | openvpn – 2.6.19-0ubuntu0.24.04.2 | ||
| 22.04 LTS jammy | openvpn – 2.5.11-0ubuntu0.22.04.3 | ||
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