wifi: iwlwifi: mvm: don't set replay counters to 0xff

[ Upstream commit d5bd4041cd70faf26fc9a54bd6f172537bbe77f3 ]

The firmware (later) actually uses the values even for keys
that are invalid as far as the host is concerned, later in
rekeying, and then only sets the low 48 bits since the PNs
are only 48 bits over the air. It does, however, compare the
full 64 bits later, obviously causing problems.

Remove the memset and use kzalloc instead to avoid any old
heap data leaking to the firmware. We already init all the
other fields in the struct anyway. This leaves the data set
to zero for any unused fields, so the firmware can look at
them safely even if they're not used right now.

Fixes: 79e561f0f05a ("iwlwifi: mvm: d3: implement RSC command version 5")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240206175739.462101146fef.I10f3855b99417af4247cff04af78dcbc6cb75c9c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
index dcda7fbb5a7a50497cb406c205add9e797888e5b..cfc239b272eb7129a2a499aa36e4ee2814a0cac2 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
@@ -461,12 +461,10 @@ static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
                struct wowlan_key_rsc_v5_data data = {};
                int i;
 
-               data.rsc = kmalloc(sizeof(*data.rsc), GFP_KERNEL);
+               data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL);
                if (!data.rsc)
                        return -ENOMEM;
 
-               memset(data.rsc, 0xff, sizeof(*data.rsc));
-
                for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
                        data.rsc->mcast_key_id_map[i] =
                                IWL_MCAST_KEY_MAP_INVALID;