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wifi: wfx: repair open network AP mode

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RSN IE missing in beacon is normal in open networks.
Avoid returning -EINVAL in this case.

Steps to reproduce:

$ cat /etc/wpa_supplicant.conf
network={
	ssid="testNet"
	mode=2
	key_mgmt=NONE
}

$ wpa_supplicant -iwlan0 -c /etc/wpa_supplicant.conf
nl80211: Beacon set failed: -22 (Invalid argument)
Failed to set beacon parameters
Interface initialization failed
wlan0: interface state UNINITIALIZED->DISABLED
wlan0: AP-DISABLED
wlan0: Unable to setup interface.
Failed to initialize AP interface

After the change:

$ wpa_supplicant -iwlan0 -c /etc/wpa_supplicant.conf
Successfully initialized wpa_supplicant
wlan0: interface state UNINITIALIZED->ENABLED
wlan0: AP-ENABLED

Cc: stable@vger.kernel.org
Fixes: fe0a7776d4 ("wifi: wfx: fix possible NULL pointer dereference in wfx_set_mfp_ap()")
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/20240823131521.3309073-1-alexander.sverdlin@siemens.com
This commit is contained in:
Alexander Sverdlin 2024-08-23 15:15:20 +02:00 committed by Kalle Valo
parent 786c5be9ac
commit 6d30bb88f6
1 changed files with 4 additions and 1 deletions
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5
drivers/net/wireless/silabs/wfx/sta.c
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@ -352,8 +352,11 @@ static int wfx_set_mfp_ap(struct wfx_vif *wvif)
ptr = (u16 *)cfg80211_find_ie(WLAN_EID_RSN, skb->data + ieoffset,
skb->len - ieoffset);
if (unlikely(!ptr))
if (!ptr) {
/* No RSN IE is fine in open networks */
ret = 0;
goto free_skb;
}
ptr += pairwise_cipher_suite_count_offset;
if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))