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Fix use after free with hapd->time_adv on interface restart

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When an interface is disabled, e.g. due to radar detected,
hapd->time_adv is freed by hostapd_free_hapd_data(), but later
used by ieee802_11_build_ap_params() calling hostapd_eid_time_adv().

Thus hapd->time_adv needs to be cleared as well.

Fixes: 39b97072b2 ("Add support for Time Advertisement")
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
This commit is contained in:
Michael Braun 2021-03-01 23:27:46 +02:00 committed by Jouni Malinen
parent 48e2725f5a
commit 2da3105ac1
1 changed files with 1 additions and 0 deletions
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src/ap/hostapd.c
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@ -414,6 +414,7 @@ void hostapd_free_hapd_data(struct hostapd_data *hapd)
} }
wpabuf_free(hapd->time_adv); wpabuf_free(hapd->time_adv);
hapd->time_adv = NULL;
#ifdef CONFIG_INTERWORKING #ifdef CONFIG_INTERWORKING
gas_serv_deinit(hapd); gas_serv_deinit(hapd);