Possible temporary service interruptions due to Critical Linux Kernel Vulnerability (CVE-2026-31431)

Due to the recently disclosed “[Copy Fail](https://copy.fail/)” (CVE-2026-31431) Linux kernel vulnerability, our system administrators are actively applying mitigation measures and updates across all Tartu University HPC Center systems today.As a result, you may experience temporary interruptions or reduced service availability while this work is in progress. All UT HPC services are affected. At this time, the work is expected to be completed today; however, we will provide further updates if the situation extends beyond today.continuing to work on a fix for this incident.**Users running their own Linux virtual machines are advised to apply the recommended patches on their systems by following the instructions provided in the “Mitigation” section of the** [**CVE-2026-31431 advisory**](https://copy.fail/)**.**Thank you for your understanding.

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We have created a documentation for CVE-2026-31431 mitigation: u003chttps://docs.hpc.ut.ee/public/cve-2026-31431/u003e This is primarily useful for UT Cloud virtual machine managers. We'll keep updating the document with the best approaches as we learn more.