From: Lee Gibson Date: Fri, 19 Mar 2021 08:58:36 +0000 (+0000) Subject: staging: rtl8712: Fix a possible NULL pointer dereference in function r8712_joinbss_e... X-Git-Tag: v5.13-rc1~173^2~386 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=105949497a559adfd36d3e583eda3b2cd8bbd6d1;p=thirdparty%2Fkernel%2Flinux.git staging: rtl8712: Fix a possible NULL pointer dereference in function r8712_joinbss_event_callback GCC 10 analyzer reports a warning: dereference of NULL The function r8712_find_network can return NULL and is usually checked but no check is present is this case. Fix by adding the check. Signed-off-by: Lee Gibson Link: https://lore.kernel.org/r/20210319085836.8259-1-leegib@gmail.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/rtl8712/rtl871x_mlme.c b/drivers/staging/rtl8712/rtl871x_mlme.c index 6074383ec0b50..f5886b39b3b50 100644 --- a/drivers/staging/rtl8712/rtl871x_mlme.c +++ b/drivers/staging/rtl8712/rtl871x_mlme.c @@ -728,7 +728,8 @@ void r8712_joinbss_event_callback(struct _adapter *adapter, u8 *pbuf) r8712_find_network(&pmlmepriv-> scanned_queue, cur_network->network.MacAddress); - pcur_wlan->fixed = false; + if (pcur_wlan) + pcur_wlan->fixed = false; pcur_sta = r8712_get_stainfo(pstapriv, cur_network->network.MacAddress);