# Ptrace Leak Fix

Fixes ptrace info leak on kernels older than 5.16. Internal to root hiding.

## Source

- **Upstream:** Upstream kernel community

## Purpose

On kernels older than 5.16, a ptrace-related information leak may be present. This fix patches the kernel to close that leak, improving security for systems using ptrace.

It is documented as internal to root hiding (SUSFS/KernelSU) — not a standalone top-level feature.

## Build Integration

The ptrace leak fix is applied as a patch during the build workflow when `use_ptrace` is enabled. It is enabled by default.

## Related

- [susfs.md](susfs.md) — root hiding
- [index.md](index.md) — full feature index