This paper examines the security of eBPF and WebAssembly (Wasm), two technologies that have gained widespread adoption in recent years, despite being designed for very different use cases and environments. While eBPF is a technology primarily used within ...

The flexibility of eBPF makes it widely used in performance, security, and monitoring. However, this flexibility is a double-edged sword, allowing attackers to use eBPF for malicious purposes. Security researchers have discovered multiple backdoors ...

io_uring offers a flexible yet efficient asynchronous I/O paradigm for Linux. Despite a significant performance improvement, it also brings many security concerns to the kernel. Not only does io_uring itself contain multiple vulnerabilities, but it can ...

For safety reasons, unprivileged users today have only limited ways to customize the kernel through the extended Berkeley Packet Filter (eBPF). This is unfortunate, especially since the eBPF framework itself has seen an increase in scope over the years. ...

Enforcing control flow integrity (CFI) in the kernel (kCFI) can prevent control-flow hijack attacks. Unfortunately, current kCFI approaches have high overhead or are inflexible and cannot support complex context-sensitive policies. To overcome these ...