wmi_evt_connect doesn't check if the connect event is received for
an already connected station.
This can lead to memory leak as a new vring is allocated without
freeing the previously allocated vring and to unexpected behavior
of nl80211 layer due to unexpected notification of a new station.
Add a check in wmi_evt_connect in AP mode to verify that the requested
CID is not associated to an already connected station.
Signed-off-by: Maya Erez <qca_merez@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/wil6210/wmi.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index 493e721..fb09035 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -487,6 +487,14 @@ static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
return;
}
del_timer_sync(&wil->connect_timer);
+ } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
+ (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
+ if (wil->sta[evt->cid].status != wil_sta_unused) {
+ wil_err(wil, "%s: AP: Invalid status %d for CID %d\n",
+ __func__, wil->sta[evt->cid].status, evt->cid);
+ mutex_unlock(&wil->mutex);
+ return;
+ }
}
/* FIXME FW can transmit only ucast frames to peer */
--
1.8.5.2
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