Linux Kernel SandBox Mode (SBM) Patch Enhances Memory Safety
Huawei engineer Petr Tesarik submitted a Linux kernel patch that adds SandBox Mode (SBM), an API confining kernel code to predefined memory regions, using hardware paging and CPU privilege levels to isolate components, detect out‑of‑bounds accesses, recover from violations, terminate the sandbox and return error codes such as -EFAULT, enabling continued execution.
Huawei engineer Petr Tesarik submitted a Linux kernel patch that introduces SandBox Mode (SBM), an API that confines kernel code to predefined memory regions, isolating components and preventing out‑of‑bounds accesses using hardware paging and CPU privilege levels.
Architecture‑specific hooks enable SBM to recover from protection violations, terminating the sandbox and returning error codes such as -EFAULT, allowing continued execution. Details are in the LKML mailing list.
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