wil6210: verify cid value is valid

cid value is not being verified in wmi_evt_delba(),
verification is added.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index 73fe9bf7ab40378060627eedae79ee0e617dbf5d..88d9e5a874a39c8bc9f337d38d99692856e2e722 100644 (file)
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -1332,6 +1332,12 @@ __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
                cid = evt->cid;
                tid = evt->tid;
        }
+
+       if (!wil_cid_valid(wil, cid)) {
+               wil_err(wil, "DELBA: Invalid CID %d\n", cid);
+               return;
+       }
+
        wil_dbg_wmi(wil, "DELBA MID %d CID %d TID %d from %s reason %d\n",
                    vif->mid, cid, tid,
                    evt->from_initiator ? "originator" : "recipient",