Add advisory for remoteprocess soundness issues

[lewismosciski]

This PR adds an advisory for soundness issues in remoteprocess.

Summary

Safe methods in the ProcessMemory trait can cause double-free and use-after-free bugs when used with non-Copy types.

Details

• Vulnerability: Methods perform bitwise copies without enforcing Copy trait
• Impact: Double-free when copying non-POD types (e.g., String, Vec)
• Affected functions: copy_struct, copy_pointer, copy_vec
• Affected versions: < 0.5.1
• Status: ✅ Confirmed and fixed by maintainer
• Fix: Added Copy trait bounds to ensure only trivially copyable types can be used
• Fixed in: 0.5.1

[lewismosciski]

Hi @benfred,

Could you please confirm you're okay with publishing this advisory for the soundness issue benfred/remoteprocess#105?

Thanks!