UEFI Flaw Enables Pre-boot DMA Attacks on Motherboards
🔒 Researchers disclosed a UEFI firmware flaw affecting some ASUS, Gigabyte, MSI, and ASRock motherboards that can falsely report DMA protections as active even when the IOMMU has not initialized, enabling pre-boot DMA attacks. The issue, tracked under multiple CVEs, allows a malicious PCIe device with physical access to read or modify system memory before the operating system loads and before security tooling can detect anything. Vendors have published advisories and firmware updates; users should verify affected models, back up important data, and apply vendor patches promptly.
