diff --git a/private/audioserver.te b/private/audioserver.te
index 7a5e8bc..74d5e88 100644
--- a/private/audioserver.te
+++ b/private/audioserver.te
@@ -105,3 +105,4 @@
 
 # Allow reading audio config props, e.g. af.fast_track_multiplier
 get_prop(audioserver, audio_config_prop)
+get_prop(audioserver, system_audio_config_prop)
diff --git a/private/property.te b/private/property.te
index 38e69bb..d21df55 100644
--- a/private/property.te
+++ b/private/property.te
@@ -44,6 +44,7 @@
 system_internal_prop(setupwizard_prop)
 system_internal_prop(snapuserd_prop)
 system_internal_prop(system_adbd_prop)
+system_internal_prop(system_audio_config_prop)
 system_internal_prop(timezone_metadata_prop)
 system_internal_prop(traced_perf_enabled_prop)
 system_internal_prop(uprobestats_start_with_config_prop)
diff --git a/private/property_contexts b/private/property_contexts
index c5f679e..568bdc1 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -418,6 +418,11 @@
 # USB devices can be connected to audio system at a certain time
 ro.audio.multi_usb_mode u:object_r:audio_config_prop:s0 exact bool
 
+# Boolean property used in libaudiohal@aidl to check if the SoC vendor
+# provides an implementation of IHalAdapterVendorExtension interface.
+# See b/323989070 for the discussion why this approach was chosen.
+ro.audio.ihaladaptervendorextension_enabled u:object_r:system_audio_config_prop:s0 exact bool
+
 persist.config.calibration_fac u:object_r:camera_calibration_prop:s0 exact string
 
 config.disable_cameraservice u:object_r:camera_config_prop:s0 exact bool