jeltz/hostap
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

P2P: Fix wpa_supplicant crash on P2P WPS PBC overlap case

Browse source 
Once PBC overlap detected when using dynamic group interfaces, the wpa_s
corresponding to P2P group interface is freed. This patch avoids
accessing the wpa_s data structure after it is freed. This fixes a
possible crash in P2P client role in such a case.
This commit is contained in:
Jithu Jance 2011-10-24 23:37:39 +03:00 committed by Jouni Malinen
parent acc247b260
commit 5cbd88d921
2 changed files with 16 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
wpa_supplicant/events.c
View file

@ -819,7 +819,7 @@ static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
}
void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
struct wpa_bss *selected,
struct wpa_ssid *ssid)
{
@ -828,13 +828,13 @@ void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
"PBC session overlap");
#ifdef CONFIG_P2P
if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
return;
return -1;
#endif /* CONFIG_P2P */
#ifdef CONFIG_WPS
wpas_wps_cancel(wpa_s);
#endif /* CONFIG_WPS */
return;
return -1;
}
/*
@ -850,7 +850,7 @@ void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
0))) {
if (wpa_supplicant_scard_init(wpa_s, ssid)) {
wpa_supplicant_req_new_scan(wpa_s, 10, 0);
return;
return 0;
}
wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
"reassociate: %d selected: "MACSTR " bssid: " MACSTR
@ -863,6 +863,8 @@ void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
"selected AP");
}
return 0;
}
@ -1088,7 +1090,11 @@ static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
wpa_scan_results_free(scan_res);
if (skip)
return 0;
wpa_supplicant_connect(wpa_s, selected, ssid);
if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
return -1;
}
wpa_supplicant_rsn_preauth_scan_results(wpa_s);
} else {
wpa_scan_results_free(scan_res);

2
wpa_supplicant/wpa_supplicant_i.h
View file

@ -581,7 +581,7 @@ int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s);
/* events.c */
void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s);
void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
struct wpa_bss *selected,
struct wpa_ssid *ssid);