Microsoft disclosed CVE-2026-52930, a Linux kernel race condition in System V shared-memory cleanup affecting Azure Kubernetes Service (AKS), Windows Subsystem for Linux 2 (WSL2), and hybrid cloud workloads. A race window during shared-memory segment destruction allows local attackers to corrupt kernel memory and achieve privilege escalation within the guest. CVSS score is 7.8 (Important). Microsoft has published patches; administrators must apply kernel updates immediately.
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