diff --git a/private/property_contexts b/private/property_contexts
index 23150343f13181084f4aec044fc5befb89bda66f..8eb2f28b268205519818a351f70e8735d1307748 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -50,6 +50,7 @@ persist.logd.logpersistd        u:object_r:logpersistd_logging_prop:s0
 logd.logpersistd        u:object_r:logpersistd_logging_prop:s0
 persist.log.tag         u:object_r:log_tag_prop:s0
 persist.mmc.            u:object_r:mmc_prop:s0
+persist.netd.stable_secret      u:object_r:netd_stable_secret_prop:s0
 persist.sys.            u:object_r:system_prop:s0
 persist.sys.safemode    u:object_r:safemode_prop:s0
 ro.sys.safemode         u:object_r:safemode_prop:s0
diff --git a/public/netd.te b/public/netd.te
index 35d9b7cee797e1fecd0f33a2a8fd8b7feb8e823c..d01d2f85657536281a183191d4951b4eb4223bdc 100644
--- a/public/netd.te
+++ b/public/netd.te
@@ -58,6 +58,7 @@ allow netd dnsmasq:process signal;
 allow netd clatd:process signal;
 
 set_prop(netd, ctl_mdnsd_prop)
+set_prop(netd, netd_stable_secret_prop)
 
 # Allow netd to publish a binder service and make binder calls.
 binder_use(netd)
@@ -104,3 +105,11 @@ neverallow netd { app_data_file system_data_file }:dir_file_class_set write;
 neverallow { domain -system_server -dumpstate -netd } netd_service:service_manager find;
 neverallow { domain -system_server -dumpstate } netd:binder call;
 neverallow netd { domain -system_server -servicemanager userdebug_or_eng(`-su') }:binder call;
+
+# persist.netd.stable_secret contains RFC 7217 secret key which should never be
+# leaked to other processes. Make sure it never leaks.
+neverallow { domain -netd -init } netd_stable_secret_prop:file r_file_perms;
+
+# We want to ensure that no other process ever tries tampering with persist.netd.stable_secret,
+# the RFC 7217 secret key managed by netd. Doing so could compromise user privacy.
+neverallow { domain -netd -init } netd_stable_secret_prop:property_service set;
diff --git a/public/property.te b/public/property.te
index daac0fb5c6836f4aaac4add0cf5ed4d3d68e0653..95efcaa78976be57be0316702a3810b5d954aa33 100644
--- a/public/property.te
+++ b/public/property.te
@@ -30,6 +30,7 @@ type log_tag_prop, property_type, log_property_type;
 type mmc_prop, property_type;
 type net_dns_prop, property_type;
 type net_radio_prop, property_type, core_property_type;
+type netd_stable_secret_prop, property_type;
 type nfc_prop, property_type, core_property_type;
 type overlay_prop, property_type;
 type pan_result_prop, property_type, core_property_type;