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wifi: iwlwifi: mvm: fix NULL deref in iwl_mvm_mld_disable_txq

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Check sta pointer for NULL and don't crash if it is.

Fixes: 006c152ac9 ("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>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Gregory Greenman
2023-03-24 00:35:43 +02:00
committed by Johannes Berg
parent 0dd45ebc08
commit d24b213014
1 changed files with 6 additions and 1 deletions
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7
drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c
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@@ -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);