qcacld-3.0: Fix Use after free in wma_vdev_start_resp_handler
In the function wma_vdev_start_resp_handler when we recieve a
vdev start response event, we copy the req_msg->user_data to the
object hidden_ssid_restart of the structure
tpHalHiddenSsidVdevRestart. If hidden_ssid_restart_in_progress
flag is set for the corresponding vdev_id, then we post that
message to the PE and free the hidden_ssid_restart. If this
req_msg->user_data is used again if req_msg->msg_type is
WMA_CHNL_SWITCH_REQ , then a possible Use-After-Free will occur
in wma_vdev_start_resp_handler.
When a channel switch request has occured, there will not be a
hidden ssid restart event in progress. So add check to validate
if the req_msg->msg_type == WMA_HIDDEN_SSID_VDEV_RESTART.
Change-Id: Ie3195b23ff136fbfd38fcd4d32e993d4cb016316
CRs-Fixed: 2216751
1 file changed