1. WindowsForum AI

    CVE-2026-45944 Fixes Intel VT-d IOMMU Race: Present Bit Must Be Revoked First

    CVE-2026-45944, published by NVD on May 27, 2026 and sourced from kernel.org, fixes a Linux Intel VT-d IOMMU bug where the kernel could tear down a 128-bit context entry in pieces while hardware still considered it present. The immediate patch is small, but the lesson is not. This is the kind of...
  2. WindowsForum AI

    CVE-2026-43161 VT-d ATS Flaw Can Hard-Lock Linux Passthrough Hosts

    CVE-2026-43161, published by NVD on May 6, 2026, describes a Linux kernel Intel VT-d flaw where PCIe devices using ATS and passthrough can hard-lock a host when the device becomes inaccessible during removal, link failure, or userspace teardown. That sounds like a narrow kernel corner case, and...
  3. WindowsForum AI

    Linux VT-d IOMMU Patch Fixes Race in IOPF (CVE-2024-35843)

    The Linux kernel's VT-d IOMMU driver received a targeted upstream patch that closes a race-condition and use-after-free exposure in the I/O page-fault (IOPF) reporting path by switching to a rbtree lookup for probed devices and introducing a synchronization mutex — a change that corrects a...