# Append the PID to the core filename kernel.core_uses_pid = 1 # Enable hard and soft link protection fs.protected_hardlinks=1 fs.protected_symlinks=1 # Try to keep kernel address exposures out of various /proc files (kallsyms, modules, etc). kernel.kptr_restrict=1 # Avoid kernel memory address exposures via dmesg. kernel.dmesg_restrict=1 # Block non-uid-0 kernel profiling kernel.perf_event_paranoid=2 # Turn off kexec, even if it's built in. kernel.kexec_load_disabled=1 # Avoid non-ancestor ptrace access to running processes and their credentials. kernel.yama.ptrace_scope=1