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D-Bus: Fix GroupAdd, Invite, RemovePersistentGroup path validation

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net_id_str can be NULL and that must be checked for to avoid NULL
pointer dereference if an invalid persistent_group_object path is used
with these methods.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2015-01-01 18:04:05 +02:00
parent ce82168b55
commit bba40b65b0
1 changed files with 4 additions and 3 deletions
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7
wpa_supplicant/dbus/dbus_new_handlers_p2p.c
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@ -353,7 +353,7 @@ DBusMessage * wpas_dbus_handler_p2p_group_add(DBusMessage *message,
iface = wpas_dbus_new_decompose_object_path(
pg_object_path, WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART,
&net_id_str);
if (iface == NULL ||
if (iface == NULL || net_id_str == NULL ||
os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
reply =
wpas_dbus_error_invalid_args(message,
@ -647,7 +647,7 @@ DBusMessage * wpas_dbus_handler_p2p_invite(DBusMessage *message,
pg_object_path,
WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART,
&net_id_str);
if (iface == NULL ||
if (iface == NULL || net_id_str == NULL ||
os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
reply = wpas_dbus_error_invalid_args(message,
pg_object_path);
@ -1899,7 +1899,8 @@ DBusMessage * wpas_dbus_handler_remove_persistent_group(
iface = wpas_dbus_new_decompose_object_path(
op, WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART,
&persistent_group_id);
if (iface == NULL || os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
if (iface == NULL || persistent_group_id == NULL ||
os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
reply = wpas_dbus_error_invalid_args(message, op);
goto out;
}