From d864f68232e910f2c8ab06a66347fc08c257dfcc Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Tue, 9 Jan 2024 11:05:45 +0100 Subject: [PATCH] hostapd: add missing NULL pointer check on radar notification Fixes a race condition that can lead to a hostapd crash Signed-off-by: Felix Fietkau --- package/network/services/hostapd/src/src/ap/ubus.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/package/network/services/hostapd/src/src/ap/ubus.c b/package/network/services/hostapd/src/src/ap/ubus.c index 6ff2257c32..66eba99901 100644 --- a/package/network/services/hostapd/src/src/ap/ubus.c +++ b/package/network/services/hostapd/src/src/ap/ubus.c @@ -1907,6 +1907,9 @@ void hostapd_ubus_notify_radar_detected(struct hostapd_iface *iface, int frequen struct hostapd_data *hapd; int i; + if (!ctx) + return; + blob_buf_init(&b, 0); blobmsg_add_u16(&b, "frequency", frequency); blobmsg_add_u16(&b, "width", chan_width);