diff mbox series

wifi: iwlwifi: mvm: fix NULL deref in iwl_mvm_mld_disable_txq

Message ID 20230323223543.1903872-1-gregory.greenman@intel.com
State New
Headers show
Series wifi: iwlwifi: mvm: fix NULL deref in iwl_mvm_mld_disable_txq | expand

Commit Message

Greenman, Gregory March 23, 2023, 10:35 p.m. UTC 
From: Gregory Greenman <gregory.greenman@intel.com>

Handle NULL sta pointer.

Fixes: 006c152ac9e5 ("wifi: iwlwifi: mvm: add support for the new STA related commands")
Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/linux-wireless/20230314194113.132873ce015c.I7b12a77e5be066730762e6ceeeaa7190293c3df1@changeid/
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c
index d81fc9207ef0..51532b6379e2 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c
@@ -227,10 +227,15 @@  static int iwl_mvm_mld_disable_txq(struct iwl_mvm *mvm,
 				   struct ieee80211_sta *sta,
 				   u16 *queueptr, u8 tid)
 {
-	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+	struct iwl_mvm_sta *mvmsta;
 	int queue = *queueptr;
 	int ret = 0;
 
+	if (!sta)
+		return -EINVAL;
+
+	mvmsta = iwl_mvm_sta_from_mac80211(sta);
+
 	if (mvm->sta_remove_requires_queue_remove) {
 		u32 cmd_id = WIDE_ID(DATA_PATH_GROUP,
 				     SCD_QUEUE_CONFIG_CMD);