Check for invalid handle before looking up device by handle

When invalid connection handle is passed to btm_find_dev_by_handle(), it returns the first device which does not have any of the transports connected.

Test: mmm packages/modules/Bluetooth
Flag: EXEMPT trivial fix
Bug: 399122843
Change-Id: Idedd4a65ed4517ae6bee7efda9b0f87b7096a8c2

1 files changed, 5 insertions, 1 deletions

diff --git a/system/stack/btm/btm_dev.cc b/system/stack/btm/btm_dev.cc
index 92dc80e1ab..992a59236c 100644
--- a/system/stack/btm/btm_dev.cc
+++ b/system/stack/btm/btm_dev.cc
@@ -326,6 +326,10 @@ static bool is_handle_equal(void* data, void* context) {
  *
  ******************************************************************************/
 tBTM_SEC_DEV_REC* btm_find_dev_by_handle(uint16_t handle) {
+  if (handle == HCI_INVALID_HANDLE) {
+    return nullptr;
+  }
+
   if (btm_sec_cb.sec_dev_rec == nullptr) {
     return nullptr;
   }
@@ -335,7 +339,7 @@ tBTM_SEC_DEV_REC* btm_find_dev_by_handle(uint16_t handle) {
     return static_cast<tBTM_SEC_DEV_REC*>(list_node(n));
   }
 
-  return NULL;
+  return nullptr;
 }
 
 static bool is_not_same_identity_or_pseudo_address(void* data, void* context) {