DO NOT MERGE Fix unexpected behavior in bta_dm_sdp_result

Check the number of UUIDs from remote device

Bug: 74016921
Test: manual
Change-Id: Ia13f34578a046faf03506cfe10680dd5c93b1af6
Merged-In: I1ca1f66bfc935f5fd219e8147511bdac7d2789ef

diff --git a/bta/dm/bta_dm_act.cc b/bta/dm/bta_dm_act.cc
index d6dddd9..e827210 100644 (file)
--- a/bta/dm/bta_dm_act.cc
+++ b/bta/dm/bta_dm_act.cc
@@ -28,6 +28,7 @@
 #include <base/bind.h>
 #include <base/callback.h>
 #include <base/logging.h>
+#include <cutils/log.h>
 #include <string.h>
 
 #include "bt_common.h"
@@ -145,6 +146,8 @@ static void bta_dm_ctrl_features_rd_cmpl_cback(tBTM_STATUS result);
 #define BTA_DM_SWITCH_DELAY_TIMER_MS 500
 #endif
 
+#define BTA_MAX_SERVICES 32
+
 static void bta_dm_reset_sec_dev_pending(BD_ADDR remote_bd_addr);
 static void bta_dm_remove_sec_dev_entry(BD_ADDR remote_bd_addr);
 static void bta_dm_observe_results_cb(tBTM_INQ_RESULTS* p_inq, uint8_t* p_eir,
@@ -1498,7 +1501,7 @@ void bta_dm_sdp_result(tBTA_DM_MSG* p_data) {
   tBT_UUID service_uuid;
 
   uint32_t num_uuids = 0;
-  uint8_t uuid_list[32][MAX_UUID_SIZE];  // assuming a max of 32 services
+  uint8_t uuid_list[BTA_MAX_SERVICES][MAX_UUID_SIZE];  // assuming a max of 32 services
 
   if ((p_data->sdp_event.sdp_result == SDP_SUCCESS) ||
       (p_data->sdp_event.sdp_result == SDP_NO_RECS_MATCH) ||
@@ -1566,8 +1569,12 @@ void bta_dm_sdp_result(tBTA_DM_MSG* p_data) {
                 bta_service_id_to_uuid_lkup_tbl[bta_dm_search_cb.service_index -
                                                 1];
             /* Add to the list of UUIDs */
-            sdpu_uuid16_to_uuid128(tmp_svc, uuid_list[num_uuids]);
-            num_uuids++;
+            if (num_uuids < BTA_MAX_SERVICES) {
+              sdpu_uuid16_to_uuid128(tmp_svc, uuid_list[num_uuids]);
+              num_uuids++;
+            } else {
+              android_errorWriteLog(0x534e4554, "74016921");
+            }
           }
         }
       }
@@ -1599,8 +1606,12 @@ void bta_dm_sdp_result(tBTA_DM_MSG* p_data) {
             SDP_FindServiceInDb_128bit(bta_dm_search_cb.p_sdp_db, p_sdp_rec);
         if (p_sdp_rec) {
           if (SDP_FindServiceUUIDInRec_128bit(p_sdp_rec, &temp_uuid)) {
-            memcpy(uuid_list[num_uuids], temp_uuid.uu.uuid128, MAX_UUID_SIZE);
-            num_uuids++;
+            if (num_uuids < BTA_MAX_SERVICES) {
+              memcpy(uuid_list[num_uuids], temp_uuid.uu.uuid128, MAX_UUID_SIZE);
+              num_uuids++;
+            } else {
+              android_errorWriteLog(0x534e4554, "74016921");
+            }
           }
         }
       } while (p_sdp_rec);