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Understanding x86_64 Paging

I’ve spent quite a lot of time messing with x86 64 page tables, understanding address translation is not easy and when I started learning about it I felt like a lot of the material out there on how it works was hard for me to wrap my head around. So in this blog post I am going to attempt to provide a kind of “what I wish I had when learning about paging”. ....

Page Map Level , Kernel Security , Virtual Page , Physical Page , Page Frame , Virtual Pages , Page Table , Page Global Directory , Not Executable , Cache Disabled , Write Through , Page Write Through , Page Size , Page Size , Protection Key , Translation Lookaside Buffer , Attribute Table , Page Attribute Table , Memory Type , Write Through , Memory Protection Key , Huge Page , Huge Page , Size Bit , Virtual Address , Physical Address ,

Ubuntu Linux Cloud Workloads Face Rampant Root Take Takeovers

Some 40% of Ubuntu Linux cloud workloads subject to GameOverlay security bugs in the OverlayFS module. ....

Sagi Tzadik , Raaz Herzberg , Ubuntu Linux , Shir Tamari , Kernel Security , Ami Luttwak , Ubuntu Kernel , Ubuntu Cloud ,