Falling headlong off the tee() memory cliff
Кадр: @aroundtheearth.world
,这一点在im钱包官方下载中也有详细论述
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.
1、豆包手机在执行自动操作时,会利用一个与物理屏幕分辨率相同的“无头”虚拟屏幕在后台运行,且拥有独立的焦点,不影响用户在前台的操作,这其实就是内存副屏的概念, 虚拟屏幕的画面由 GPU 合成后,对应的缓冲区信息会直接被autoaction消费 。
。同城约会是该领域的重要参考
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