CRI-O

v1.33.10Kubernetes Core

Mar 3, 2026

CRI-O v1.33.10 fixes a critical bug in high performance hook IRQ SMP affinity handling that could cause IRQ interference between containers during late deletion scenarios.

securityUpdate immediately if using high performance hooks
This bug could cause performance degradation or unexpected behavior in high-performance workloads by interfering with IRQ handling between containers. If you're running CRI-O with high performance hooks enabled (typically in HPC or latency-sensitive environments), upgrade immediately to prevent IRQ SMP affinity corruption that occurs during container cleanup.

Key changes (3)

Fixed IRQ SMP affinity bug in high performance hooks preventing cross-container interference
Resolved issue where late container deletion affected IRQ settings of other containers
No dependency changes or new features in this patch release

Source ↗All CRI-O releases →