diff --git a/decoder/drc_src/impd_drc_common.h b/decoder/drc_src/impd_drc_common.h
index ce3396d..2da2542 100644
--- a/decoder/drc_src/impd_drc_common.h
+++ b/decoder/drc_src/impd_drc_common.h
@@ -151,6 +151,8 @@ extern "C" {
 #define PARAM_DRC_TYPE_LIM_ATTACK_DEFAULT 5
 #define PARAM_DRC_TYPE_LIM_RELEASE_DEFAULT 50
 
+#define MAX_LOUDNESS_INFO_COUNT (16)
+
 #define UNIDRCCONFEXT_V1 0x2
 #define UNIDRCLOUDEXT_EQ 0x1
 #define UNIDRCINTERFACEEXT_EQ 0x1
diff --git a/decoder/drc_src/impd_drc_selection_process_drcset_selection.c b/decoder/drc_src/impd_drc_selection_process_drcset_selection.c
index 7ca8aec..370d169 100644
--- a/decoder/drc_src/impd_drc_selection_process_drcset_selection.c
+++ b/decoder/drc_src/impd_drc_selection_process_drcset_selection.c
@@ -775,6 +775,9 @@ WORD32 impd_drc_set_preselection(
                   loudness_normalization_gain_db, loudness);
               if (err) return (err);
 
+              if (loudness_info_count > MAX_LOUDNESS_INFO_COUNT)
+                return UNEXPECTED_ERROR;
+
               err = impd_signal_peak_level_info(
                   pstr_drc_config, pstr_loudness_info, str_drc_instruction_str,
                   requested_dwnmix_id[d],
@@ -787,6 +790,7 @@ WORD32 impd_drc_set_preselection(
               for (l = 0; l < loudness_info_count; l++) {
                 WORD32 match_found_flag = 0;
                 WORD32 p;
+                if (k >= SELECTION_CANDIDATE_COUNT_MAX) return UNEXPECTED_ERROR;
                 selection_candidate_info[k].loudness_norm_db_gain_adjusted =
                     loudness_normalization_gain_db[l];
 
@@ -873,7 +877,6 @@ WORD32 impd_drc_set_preselection(
                      !str_drc_instruction_str
                           ->drc_set_target_loudness_present)) {
                   k++;
-                } else {
                 }
               }
             }
@@ -913,6 +916,7 @@ WORD32 impd_drc_set_preselection(
                     signal_peak_level[p] + loudness_normalization_gain_db[l] -
                         pstr_drc_sel_proc_params_struct->output_peak_level_max);
                 adjustment = min(adjustment, max(0.0f, loudness_deviation_max));
+                if (k >= SELECTION_CANDIDATE_COUNT_MAX) return UNEXPECTED_ERROR;
                 selection_candidate_info[k].loudness_norm_db_gain_adjusted =
                     loudness_normalization_gain_db[l] - adjustment;