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hostapd: fix crash on interface setup failure

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Add a missing NULL pointer check when deleting beacons

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry picked from commit 3984fb0582)
Link: https://github.com/openwrt/openwrt/pull/15898
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Felix Fietkau 2024-06-14 14:43:39 +02:00 committed by Hauke Mehrtens
parent 80a36594f9
commit 287e2565e2
1 changed files with 21 additions and 0 deletions
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package/network/services/hostapd/patches/060-nl80211-fix-crash-when-adding-an-interface-fails.patch Normal file
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From: Felix Fietkau <nbd@nbd.name>
Date: Fri, 14 Jun 2024 14:41:16 +0200
Subject: [PATCH] nl80211: fix crash when adding an interface fails
When adding an interface fails early, the bss link is still NULL.
Avoid crashing on deleting beacons.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -3004,7 +3004,7 @@ static int wpa_driver_nl80211_del_beacon
struct nl_msg *msg;
struct wpa_driver_nl80211_data *drv = bss->drv;
- if (!link->beacon_set)
+ if (!link || !link->beacon_set)
return 0;
wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",