iommu dma isolation

The tag iommu dma isolation covers discussions about Input-Output Memory Management Unit (IOMMU) technology and its role in enforcing Direct Memory Access (DMA) isolation on Windows systems. Content under this tag includes analysis of vulnerabilities such as CVE-2026-45944, which affects Intel VT-d IOMMU and involves race conditions in context entry teardown. The tag also explores how IOMMU DMA isolation contributes to system security by preventing unauthorized device memory access, with emphasis on proper implementation and patching. Topics range from kernel-level fixes to broader implications for enterprise IT administrators managing hardware-level isolation.