Packages
- openvpn - virtual private network software
Details
It was discovered that OpenVPN had a use-after-free vulnerability in
its TLS session handling. An attacker could possibly use this issue
to cause OpenVPN to crash, resulting in a denial of service, or
execute arbitrary code. (CVE-2026-84471)
It was discovered that OpenVPN incorrectly handled retransmissions of
ACK packet IDs, which could trigger a timeout integer overflow. A
remote attacker could possibly use this issue to cause a denial of
service. (CVE-2026-84732)
It was discovered that OpenVPN had a use-after-free vulnerability in
its TLS session handling. An attacker could possibly use this issue
to cause OpenVPN to crash, resulting in a denial of service, or
execute arbitrary code. (CVE-2026-84471)
It was discovered that OpenVPN incorrectly handled retransmissions of
ACK packet IDs, which could trigger a timeout integer overflow. A
remote attacker could possibly use this issue to cause a denial of
service. (CVE-2026-84732)
Update instructions
After a standard system update you need to restart OpenVPN to 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 – 2.7.0-1ubuntu1.3 | ||
| 24.04 LTS noble | openvpn – 2.6.19-0ubuntu0.24.04.4 | ||
| 22.04 LTS jammy | openvpn – 2.5.11-0ubuntu0.22.04.5 | ||
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