From: Jouni Malinen <j@w1.fi>
Date: Tue, 3 Jul 2012 17:54:40 +0000 (+0300)
Subject: autoscan: Fix potential freeing of uninitialized pointer
X-Git-Tag: hostap_2_0~547
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b9b12d02f02e30786a18474dbd8c4c2cc60da3e1;p=thirdparty%2Fhostap.git

autoscan: Fix potential freeing of uninitialized pointer

Commit 7c865c68536825d91e64e1545a1f6ed51526ebff introduced a code
path that can skip extra_ie initialization in wpa_supplicant_scan().
This could result in semi-random crashes when using the autoscan
mechanism. Fix this by initializing extra_ie to NULL.

Signed-hostap: Jouni Malinen <j@w1.fi>
---

diff --git a/wpa_supplicant/scan.c b/wpa_supplicant/scan.c
index 477db11c3..10a46931e 100644
--- a/wpa_supplicant/scan.c
+++ b/wpa_supplicant/scan.c
@@ -432,7 +432,7 @@ static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
 	struct wpa_supplicant *wpa_s = eloop_ctx;
 	struct wpa_ssid *ssid;
 	int scan_req = 0, ret;
-	struct wpabuf *extra_ie;
+	struct wpabuf *extra_ie = NULL;
 	struct wpa_driver_scan_params params;
 	struct wpa_driver_scan_params *scan_params;
 	size_t max_ssids;