kernel denial of service

The kernel denial of service tag on WindowsForum.com covers vulnerabilities and issues that can cause a system to become unresponsive or crash at the kernel level. Recent content discusses CVE-2026-43161, a Linux kernel flaw in Intel VT-d that allows PCIe devices using ATS and passthrough to hard-lock a host during device removal, link failure, or userspace teardown. This affects systems running KVM, VFIO, DPDK, GPU or NIC passthrough, and dense virtualization hosts. The tag highlights how kernel denial of service can result from hardware-software interactions, particularly in IOMMU and virtualization scenarios, and emphasizes the importance of understanding failure modes beyond remote code execution.