diff --git a/scripts/docker/install/rootless/rootless_docker.sh b/scripts/docker/install/rootless/rootless_docker.sh
index 0f1c3de..a44cb29 100755
--- a/scripts/docker/install/rootless/rootless_docker.sh
+++ b/scripts/docker/install/rootless/rootless_docker.sh
@@ -209,6 +209,33 @@ EOL"
             isSuccessful "Updated the sysctl with Docker Rootless configuration"
         fi
 
+        # Enabling unprivileged user namespaces (needed for rootless) widens the
+        # kernel attack surface reachable by unprivileged users. Offset that by
+        # closing the surfaces that local-privilege-escalation chains lean on:
+        # kptr_restrict hides kernel pointers (defeats info-leak primitives),
+        # ptrace_scope blocks cross-process ptrace (limits credential theft after
+        # a compromise), and bpf_jit_harden hardens the JIT against spraying.
+        # All three are distro-portable and have negligible runtime impact.
+        if ! grep -qF "# LIBREPORTAL KERNEL HARDENING START" "$sysctl"; then
+
+            local result=$(echo '# LIBREPORTAL KERNEL HARDENING START' | sudo tee -a "$sysctl" > /dev/null)
+            checkSuccess "Adding kernel hardening header to sysctl"
+
+            local result=$(echo 'kernel.kptr_restrict=2' | sudo tee -a "$sysctl" > /dev/null)
+            checkSuccess "Restricting kernel pointer exposure (kptr_restrict)"
+
+            local result=$(echo 'kernel.yama.ptrace_scope=1' | sudo tee -a "$sysctl" > /dev/null)
+            checkSuccess "Restricting cross-process ptrace (yama.ptrace_scope)"
+
+            local result=$(echo 'net.core.bpf_jit_harden=2' | sudo tee -a "$sysctl" > /dev/null)
+            checkSuccess "Hardening the BPF JIT (bpf_jit_harden)"
+
+            local result=$(echo '# LIBREPORTAL KERNEL HARDENING END' | sudo tee -a "$sysctl" > /dev/null)
+            checkSuccess "Adding kernel hardening end to sysctl"
+
+            isSuccessful "Applied kernel LPE-surface hardening"
+        fi
+
         local result=$(sudo sysctl --system)
         checkSuccess "Applying changes to sysctl"