intel vt d

Intel VT-d (Virtualization Technology for Directed I/O) is a hardware feature that enables direct device assignment to virtual machines by providing an IOMMU (Input-Output Memory Management Unit). On WindowsForum.com, discussions focus on Linux kernel vulnerabilities affecting Intel VT-d, including CVE-2026-45944 (a race condition in context entry teardown), CVE-2026-43161 (a hard-lock flaw involving ATS and passthrough devices), and CVE-2024-35843 (a race and use-after-free in IOPF handling). These threads cover security patches, IOMMU race conditions, and the impact on KVM, VFIO, DPDK, and GPU/NIC passthrough setups. The tag is relevant for administrators managing virtualization hosts and seeking to understand VT-d security issues.