staging: rtl8723bs: fix null dereference in find_network

[ Upstream commit 41460a19654c32d39fd0e3a3671cd8d4b7b8479f ]

The variable pwlan has the possibility of being NULL when passed into
rtw_free_network_nolock() which would later dereference the variable.

Fixes: 554c0a3abf21 ("staging: Add rtl8723bs sdio wifi driver")
Cc: stable@vger.kernel.org
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Link: https://patch.msgid.link/20260202205429.20181-1-ethantidmore06@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/staging/rtl8723bs/core/rtw_mlme.c b/drivers/staging/rtl8723bs/core/rtw_mlme.c
index c06d990350e69950f3096354859b673fa729525d..362c904adddc59aad1e82e8c35f341da3c1233d6 100644 (file)
--- a/drivers/staging/rtl8723bs/core/rtw_mlme.c
+++ b/drivers/staging/rtl8723bs/core/rtw_mlme.c
@@ -835,8 +835,10 @@ static void find_network(struct adapter *adapter)
        struct wlan_network *tgt_network = &pmlmepriv->cur_network;
 
        pwlan = rtw_find_network(&pmlmepriv->scanned_queue, tgt_network->network.mac_address);
-       if (pwlan)
-               pwlan->fixed = false;
+       if (!pwlan)
+               return;
+
+       pwlan->fixed = false;
 
        if (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) &&
            (adapter->stapriv.asoc_sta_count == 1))