From: Benjamin Berg <benjamin.berg@xxxxxxxxx>
Guard against invalid station IDs in iwl_mvm_mld_rm_sta_id as that would
result in out-of-bounds array accesses. This prevents issues should the
driver get into a bad state during error handling.
Signed-off-by: Benjamin Berg <benjamin.berg@xxxxxxxxx>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@xxxxxxxxx>
---
drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c
index 6f9ba0c18fa3..4ba1599ed71c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c
@@ -855,10 +855,15 @@ int iwl_mvm_mld_rm_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
int iwl_mvm_mld_rm_sta_id(struct iwl_mvm *mvm, u8 sta_id)
{
- int ret = iwl_mvm_mld_rm_sta_from_fw(mvm, sta_id);
+ int ret;
lockdep_assert_held(&mvm->mutex);
+ if (WARN_ON(sta_id == IWL_MVM_INVALID_STA))
+ return 0;
+
+ ret = iwl_mvm_mld_rm_sta_from_fw(mvm, sta_id);
+
RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
RCU_INIT_POINTER(mvm->fw_id_to_link_sta[sta_id], NULL);
return ret;
--
2.34.1
