[USN-8286-1] OpenVPN vulnerabilities

========================================================================== Ubuntu Security Notice USN-8286-1 May 20, 2026 openvpn vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in OpenVPN. Software Description: - 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) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS openvpn 2.7.0-1ubuntu1.1 Ubuntu 25.10 openvpn 2.6.19-0ubuntu0.25.10.2 Ubuntu 24.04 LTS openvpn 2.6.19-0ubuntu0.24.04.2 Ubuntu 22.04 LTS openvpn 2.5.11-0ubuntu0.22.04.3 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8286-1 CVE-2026-35058, CVE-2026-40215 Package Information: https://launchpad.net/ubuntu/+source/openvpn/2.7.0-1ubuntu1.1 https://launchpad.net/ubuntu/+source/openvpn/2.6.19-0ubuntu0.25.10.2 https://launchpad.net/ubuntu/+source/openvpn/2.6.19-0ubuntu0.24.04.2 https://launchpad.net/ubuntu/+source/openvpn/2.5.11-0ubuntu0.22.04.3