Description
openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker to cause a double-free of memory by sending a malformed request to the interactive service. This could cause a denial-of-service through memory corruption or possibly have unspecified other impact including privilege escalation.
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | openvpn | 2.4.3-5.3.19 | SUSE-SU-2018:1888-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openvpn | 2.5.3-1.2 | openSUSE-SU-2024:11128-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | openvpn | 2.4.6-r0 | — |
| Alpine v3.23 | openvpn | 2.4.6-r0 | — |
| Alpine v3.22 | openvpn | 2.4.6-r0 | — |
| Alpine v3.21 | openvpn | 2.4.6-r0 | — |
| Alpine v3.20 | openvpn | 2.4.6-r0 | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | openvpn | 2.4.6-r0 | — |
| Alpine v3.18 | openvpn | 2.4.6-r0 | — |
| Alpine v3.17 | openvpn | 2.4.6-r0 | — |
| Alpine v3.16 | openvpn | 2.4.6-r0 | — |
| Alpine v3.15 | openvpn | 2.4.6-r0 | — |
| Alpine v3.14 | openvpn | 2.4.6-r0 | — |
| Alpine v3.13 | openvpn | 2.4.6-r0 | — |
| Alpine v3.12 | openvpn | 2.4.6-r0 | — |
| Alpine v3.11 | openvpn | 2.4.6-r0 | — |
| Alpine v3.10 | openvpn | 2.4.6-r0 | — |
Advisories 2
- SUSE-SU-2018:1888-1 Security update for openvpn SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11128-1 openvpn-2.5.3-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026