IOMMU
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GPUBreach attack can turn GPU Rowhammer bit flips into system takeover
Researchers at the University of Toronto say a new GPUBreach attack can use Rowhammer bit flips in GDDR6 GPU memory to corrupt page tables, gain GPU read and write access and potentially reach full system compromise.
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UEFI firmware flaw leaves early-boot DMA protections uninitialized on multiple motherboards
A firmware flaw affecting ASRock, ASUS, GIGABYTE and MSI motherboards can leave IOMMU uninitialized during early boot, allowing DMA-capable PCIe devices with physical access to read or modify system memory; four CVEs have been assigned and vendors have released firmware updates.
