[PATCH] rtw88: check for validity before using pointer
From: Muhammad Usama Anjum
Date: Thu Dec 23 2021 - 12:51:29 EST
ieee80211_probereq_get() can return NULL. Pointer skb should be checked
for validty before use.
Fixes: 10d162b2ed39 ("rtw88: 8822c: add ieee80211_ops::hw_scan")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
---
drivers/net/wireless/realtek/rtw88/fw.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c
index 2f7c036f9022..0fc05a810d05 100644
--- a/drivers/net/wireless/realtek/rtw88/fw.c
+++ b/drivers/net/wireless/realtek/rtw88/fw.c
@@ -1866,6 +1866,8 @@ static int rtw_hw_scan_update_probe_req(struct rtw_dev *rtwdev,
req->ssids[i].ssid,
req->ssids[i].ssid_len,
req->ie_len);
+ if (!skb)
+ return -ENOMEM;
rtw_append_probe_req_ie(rtwdev, skb, &list, rtwvif);
kfree_skb(skb);
}
--
2.30.2