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DPP2: Clean up Controller on hostapd interface removal

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Stop the DPP Controller instance, if one is started, when the hostapd
interface that was used to start that Controller is removed. This is
needed to remove the control pointers that point to the soon-to-be-freed
hostapd structures. This fixes an issue where a Controller operation
with multiple interfaces could have resulted in references to freed
memory if an interface is removed without explicitly stopping the DPP
Controller.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2021-10-19 00:04:46 +03:00 • committed by Jouni Malinen
parent d8b3d08159
commit 5bac420e5e
3 changed files with 10 additions and 0 deletions
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2
src/ap/dpp_hostapd.c
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@ -2276,6 +2276,8 @@ void hostapd_dpp_deinit(struct hostapd_data *hapd)
eloop_cancel_timeout(hostapd_dpp_conn_status_result_wait_timeout, hapd,
NULL);
hostapd_dpp_chirp_stop(hapd);
if (hapd->iface->interfaces)
dpp_controller_stop_for_ctx(hapd->iface->interfaces->dpp, hapd);
#endif /* CONFIG_DPP2 */
dpp_auth_deinit(hapd->dpp_auth);
hapd->dpp_auth = NULL;