Service Announcement

unscheduled Outage

Security Advisory CVE-2026-53359 affecting all users

• Start: Thu, 9 Jul 2026 7:00a.m. (UTC), Planned end: Wed, 15 Jul 2026 7:00a.m. (UTC)

ARDC is aware of the Security Advisory CVE-2026-53359, a Linux kernel vulnerability affecting virtualisation infrastructure, and is assessing its applicability across the platform.

No vendor patch is currently available. ARDC's technical team is actively monitoring the issue and evaluating mitigation options in the meantime.

There is no indication of unauthorised access or service impact at this time, and all services remain operational.

There will be maintenance windows required to apply a mitigation, which will involve some downtime for user virtual machines.

Users will receive communications regarding their specific cloud resources shortly.