Kernel DMA Protection
Kernel Direct Memory Access (DMA) Protection is a Windows security feature that protects against external peripherals from gaining unauthorized access to memory. PCIe hot plug devices such as Thunderbolt, USB4, and CFexpress allow users to attach classes of external peripherals, including graphics cards, to their devices with the plug-and-play ease of USB. These devices are DMA-capable, and can ac
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ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ç ”ç©¶è€…ãŒMicrosoftã®Windowsã‚„Appleã®macOSã€Linuxã€FreeBSDã¨ã„ã£ãŸä¸»è¦OSã«å½±éŸ¿ã‚’与ãˆã‚‹æ–°ã—ã„脆弱性を発見ã—ã¾ã—ãŸã€‚ã“ã®è„†å¼±æ€§ã‚’用ã„ã‚Œã°Direct Memory Access(DMA)ベースã®æ”»æ’ƒã«å¯¾ã™ã‚‹é˜²å¾¡ãƒ¡ã‚«ãƒ‹ã‚ºãƒ ã‚’ãƒã‚¤ãƒ‘スã—ã¦PCã®ã‚·ã‚¹ãƒ†ãƒ メモリã«ç›´æŽ¥èªã¿æ›¸ãã™ã‚‹ã“ã¨ãŒå¯èƒ½ã«ãªã‚Šã¾ã™ã€‚ Thunderclap: Exploring Vulnerabilities in Operating System IOMMU Protection via DMA from Untrustworthy Peripherals (PDF)https://www.ndss-symposium.org/wp-content/uploads/2019/02/ndss2019_05A-1_Markettos_paper.pdf New Flaws Re-En
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