UTHPC incident

University of Tartu cloud service emergency maintenance - mitigating a Linux kernel CVE

Major Resolved

UTHPC experienced a major incident on July 11, 2026, lasting 3h 5m. The incident has been resolved; the full update timeline is below.

Started
Jul 11, 2026, 06:00 AM UTC
Resolved
Jul 11, 2026, 09:05 AM UTC
Duration
3h 5m
Detected by Pingoru
Jul 11, 2026, 06:00 AM UTC

Update timeline

  1. investigating Jul 11, 2026, 06:00 AM UTC

    Due to a recently disclosed critical security vulnerability affecting Linux kernel-based virtualization platforms, we are implementing preventive security measures. As part of these maintenance activities, UT Cloud virtual machines (VMs) will be restarted. The VMs will be brought back online in a rolling manner over the next couple of hours. Besides virtual machines, some websites are also affected. In case of questions, please contact us at [email protected]. We apologize for any inconvenience and appreciate your understanding as we work to ensure the security and stability of our platform.

  2. resolved Jul 11, 2026, 09:05 AM UTC

    The maintenance is finished. The UT Cloud service is available, and affected virtual machines and websites are restored.