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On the MacBook Neo, I can ostensibly go to a browser, any browser, and click links to download whatever software I'd like.

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Answer。关于这个话题,使用 WeChat 網頁版提供了深入分析

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The Sentry intercepts the untrusted code’s syscalls and handles them in user-space. It reimplements around 200 Linux syscalls in Go, which is enough to run most applications. When the Sentry actually needs to interact with the host to read a file, it makes its own highly restricted set of roughly 70 host syscalls. This is not just a smaller filter on the same surface; it is a completely different surface. The failure mode changes significantly. An attacker must first find a bug in gVisor’s Go implementation of a syscall to compromise the Sentry process, and then find a way to escape from the Sentry to the host using only those limited host syscalls.

关于作者

周杰,资深行业分析师,长期关注行业前沿动态,擅长深度报道与趋势研判。

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