Description
The configuration initialization tool in OpenVPN 3 Linux v20 through v24 on Linux allows a local attacker to use symlinks pointing at an arbitrary directory which will change the ownership and permissions of that destination directory.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenVPN | OpenVPN 3 Linux | v20 – ≤ v24 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openvpn3-client | 24.1+dfsg-1 | — |
| Debian 13 | openvpn3-client | 24.1+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | openvpn3-client | No fix yet | — |
| Ubuntu 26.04 LTS | openvpn3-client | No fix yet | — |
| Ubuntu 25.10 | openvpn3-client | No fix yet | — |