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FEX-Emu and Flaws in Linux
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FEX ☛ The scourge of x86 emulation
Welcome to the first feature article on our site. We’re going to cover an ongoing problem with x86 emulation that affects every application that we emulate. This comes down to a single over-arching term that has wide-reaching ramifications; Emulating the x86 Total Store Ordering memory model (x86-TSO).
The problems with emulating this memory model on the weak ordering memory model that ARM defines is multi-faceted and covers multiple issues. We’re going to go over all the problems that we can encounter and the ways we solve (or in some cases can’t solve) in this article. Get yourself a snack and a warm drink to enjoy, this is going to be a long one.
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[Old] FEX ☛ Hello world – FEX-Emu – A fast linux usermode x86 and x86-64 emulator
FEX-Emu is a linux usermode x86 and x86-64 emulator for arm64. It aims to bring x86 and x86-64 games to arm64 devices.
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Hacker News ☛ CISA Flags Three Linux Kernel Vulnerabilities Exploited in the Wild
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added three security flaws impacting the Linux kernel to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation.
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Public Exploits Released For Multiple Linux Kernel Flaws Enabling Root Access
The vulnerabilities—some of which remained undetected for more than two decades—affect several Linux networking components and could potentially be used to escape containers or, under narrowly defined conditions, attack systems remotely.