From: Jouni Malinen <jouni@qca.qualcomm.com>
Date: Fri, 19 Aug 2016 13:26:48 +0000 (+0300)
Subject: Fix TRACK_STA_LIST before BSS enabled
X-Git-Tag: hostap_2_6~105
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=30e0745bf7e7c302d5e0977c805b6f07ac2f3d2b;p=thirdparty%2Fhostap.git

Fix TRACK_STA_LIST before BSS enabled

This hostapd control interface command could hit a NULL pointer
dereference if issued before the BSS was enabled.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
---

diff --git a/hostapd/ctrl_iface.c b/hostapd/ctrl_iface.c
index 4e7b58ec5..5f3d6bd70 100644
--- a/hostapd/ctrl_iface.c
+++ b/hostapd/ctrl_iface.c
@@ -2040,6 +2040,9 @@ static int hostapd_ctrl_iface_track_sta_list(struct hostapd_data *hapd,
 	struct hostapd_sta_info *info;
 	struct os_reltime now;
 
+	if (!iface->num_sta_seen)
+		return 0;
+
 	sta_track_expire(iface, 0);
 
 	pos = buf;