From: Ethan Tidmore <ethantidmore06@gmail.com>
To: stable@vger.kernel.org
Cc: gregkh@linuxfoundation.org, sashal@kernel.org,
Ethan Tidmore <ethantidmore06@gmail.com>
Subject: [PATCH 5.10] staging: rtl8723bs: fix null dereference in find_network
Date: Mon, 9 Mar 2026 21:48:15 -0500 [thread overview]
Message-ID: <20260310024815.53668-1-ethantidmore06@gmail.com> (raw)
[ 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>
---
drivers/staging/rtl8723bs/core/rtw_mlme.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/rtl8723bs/core/rtw_mlme.c b/drivers/staging/rtl8723bs/core/rtw_mlme.c index 364e6cd76054..0ee1022b50d5 100644
--- a/drivers/staging/rtl8723bs/core/rtw_mlme.c
+++ b/drivers/staging/rtl8723bs/core/rtw_mlme.c
@@ -967,10 +967,12 @@ 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.MacAddress);
- if (pwlan)
- pwlan->fixed = false;
- else
+ if (!pwlan) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("rtw_free_assoc_resources : pwlan == NULL\n\n"));
+ return;
+ }
+
+ pwlan->fixed = false;
if (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) &&
(adapter->stapriv.asoc_sta_count == 1))
--
2.53.0
reply other threads:[~2026-03-10 2:48 UTC|newest]
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