New Blog Post: Kunai vs io_uring (https://why.kunai.rocks/blog/kunai-vs-io_uring)
Ever wondered how io_uring revolutionizes I/O operations in the Linux kernel? Inspired by Armo's blog post (https://www.armosec.io/blog/io_uring-rootkit-bypasses-linux-security/) about a PoC rootkit using io_uring, we explored this feature's security implications and how tools like Kunai can monitor these operations.
Key Takeaways:
io_uring boosts I/O performance by reducing system call overhead and enabling asynchronous operations Security tools struggle to monitor io_uring due to its unique handling of operations Kunai now provides visibility into io_uring operations, though blocking malicious activities remains challenging Recent kernel versions have introduced auditing and security controls for io_uring, but these are still limited
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