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Kernel Security and Vulnerability Management

Kernel Security and Vulnerability Management

1
posts
2026

Together AI has implemented a robust strategy for managing kernel-level security vulnerabilities, exemplified by their rapid response to the Copy Fail (CVE‑2026‑31431) vulnerability. This includes immediate fleet-wide mitigation by disabling vulnerable kernel modules, followed by a phased rollout of vendor-provided kernel patches. The platform emphasizes a default-off approach for niche kernel interfaces and maintains continuous monitoring for anomalous kernel behavior and usage. This proactive stance ensures the security and stability of multi-tenant AI infrastructure.

2026

From 732 bytes to nowhere: shutting down Copy Fail in production

4/30/2026

This post details Together AI's rapid response to the Copy Fail (CVE‑2026‑31431) Linux kernel vulnerability. The immediate mitigation involved disabling the `algif_aead` kernel module across the entire fleet to prevent exploitation, a process that did not require reboots and had minimal operational impact on AI workloads. The strategy for rolling out vendor patches involves staged deployment in non-production environments, followed by gradual rollout to production clusters, with rigorous testing for performance and stability. The post also highlights the addition of Copy Fail-aware signals to telemetry for enhanced detection and emphasizes a kernel exposure model that defaults to 'off' for niche interfaces, coupled with fast fleet-wide toggles and a validation pipeline for AI workloads.