From: Qiwei Cai <quic_qcai@quicinc.com>
Date: Thu, 20 Oct 2022 05:37:38 +0000 (+0800)
Subject: MLD STA: Fix crash caused by NULL wpa_s->current_ssid
X-Git-Tag: hostap_2_11~1616
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f3efa21c2989d8d75ced856b8ee0342e3c88fbe;p=thirdparty%2Fhostap.git

MLD STA: Fix crash caused by NULL wpa_s->current_ssid

For wpa_supplicant_get_new_bss(), wpa_s->current_ssid can be NULL in
some cases. Add a NULL check before accessing it to avoid NULL pointer
dereference errors.

Fixes: 7784964cbe88 ("MLD STA: Fetch MLO connection info into core wpa_supplicant")
Signed-off-by: Jouni Malinen <quic_jouni@quicinc.com>
---

diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index 89e0b09ea..f57b058f8 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -139,7 +139,7 @@ static struct wpa_bss * wpa_supplicant_get_new_bss(
 	struct wpa_bss *bss = NULL;
 	struct wpa_ssid *ssid = wpa_s->current_ssid;
 
-	if (ssid->ssid_len > 0)
+	if (ssid && ssid->ssid_len > 0)
 		bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
 	if (!bss)
 		bss = wpa_bss_get_bssid(wpa_s, bssid);