Description
In Ubuntu, gnome-control-center did not properly reflect SSH remote login status when the system was configured to use systemd socket activation for openssh-server. This could unknowingly leave the local machine exposed to remote SSH access contrary to expectation of the user.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Canonical | Ubuntu's gnome-control-center | 1:45 – < 1:45.0-1ubuntu3.1, 1:44 – < 1:44.0-1ubuntu6.1, 1:41 – < 1:41.7-0ubuntu0.22.04.8, 1:3 – < 1:3.36.5-0ubuntu4.1 | 1:45.0-1ubuntu3.1 |
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 | gnome-control-center | No fix yet | — |
| Debian 13 | gnome-control-center | No fix yet | — |
| Debian 12 | gnome-control-center | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | gnome-control-center | 1:45.0-1ubuntu4 | — |
| Ubuntu 22.04 LTS | gnome-control-center | 1:41.7-0ubuntu0.22.04.8 | USN-6554-1 |
| Ubuntu 20.04 LTS | gnome-control-center | 1:3.36.5-0ubuntu4.1 | USN-6554-1 |
| Ubuntu 18.04 LTS | gnome-control-center | No fix yet | — |
| Ubuntu 16.04 LTS | gnome-control-center | No fix yet | — |
Advisories 1
- USN-6554-1 gnome-control-center vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
References
- https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/2039577 issue-tracking
- https://ubuntu.com/security/notices/USN-6554-1 vendor-advisory
- https://ubuntu.com/security/CVE-2023-5616 issue-tracking