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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.，详情可参考91视频
。关于这个话题，同城约会提供了深入分析
Forum registration required. I created an account, posted my case, and… nothing. No confirmation email, no status update, no resolution notice. At some point, the flag simply disappeared. Ignorance is bliss, hah?，这一点在heLLoword翻译官方下载中也有详细论述
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BuildKit is a general-purpose, pluggable build framework. It can produce OCI images, yes, but also tarballs, local directories, APK packages, RPMs, or anything else you can describe as a directed acyclic graph of filesystem operations. The Dockerfile is just one frontend. You can write your own.