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Fix REMOVE_NETWORK to not run operations with invalid current_ssid

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If the REMOVE_NETWORK command is used to delete the currently connected
network, some operations were run between removing the network and
clearing of wpa_s->current_ssid. This left wpa_s->current_ssid pointing
to freed memory and should any operation end up using it before the
pointer gets cleared, freed memory could be references. Avoid this by
removing the network only after having completed the operations that
clear wpa_s->current_ssid.

Signed-hostap: Deepthi Gowri <deepthi@codeaurora.org>
intended-for: hostap-1
This commit is contained in:
Deepthi Gowri 2012-09-03 11:55:38 +03:00 committed by Jouni Malinen
parent 7ff833674b
commit 59ff6653aa
1 changed files with 7 additions and 2 deletions
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9
wpa_supplicant/ctrl_iface.c
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@ -1861,8 +1861,7 @@ static int wpa_supplicant_ctrl_iface_remove_network(
ssid = wpa_config_get_network(wpa_s->conf, id);
if (ssid)
wpas_notify_network_removed(wpa_s, ssid);
if (ssid == NULL ||
wpa_config_remove_network(wpa_s->conf, id) < 0) {
if (ssid == NULL) {
wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
"id=%d", id);
return -1;
@ -1886,6 +1885,12 @@ static int wpa_supplicant_ctrl_iface_remove_network(
wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
}
if (wpa_config_remove_network(wpa_s->conf, id) < 0) {
wpa_printf(MSG_DEBUG, "CTRL_IFACE: Not able to remove the "
"network id=%d", id);
return -1;
}
return 0;
}