Re: [PATCH wireless v1] wifi: mwifiex: discard erroneous disassoc frames on STA interface

[Francesco Dolcini <francesco@dolcini.it>]

On Tue, Jul 01, 2025 at 03:26:43PM +0100, Vitor Soares wrote:
> From: Vitor Soares <vitor.soares@toradex.com>
> 
> When operating in concurrent STA/AP mode with host MLME enabled,
> the firmware incorrectly sends disassociation frames to the STA
> interface when clients disconnect from the AP interface.

...

> Add validation in the STA receive path to verify that disassoc/deauth
> frames originate from the connected AP. Frames that fail this check
> are discarded early, preventing them from reaching the MLME layer and
> triggering WARN_ON().
> 
> This filtering logic is similar with that used in the
> ieee80211_rx_mgmt_disassoc() function in mac80211, which drops
> disassoc frames that don't match the current BSSID
> (!ether_addr_equal(mgmt->bssid, sdata->vif.cfg.ap_addr)), ensuring
> only relevant frames are processed.
> 
> Tested on:
> - 8997 with FW 16.68.1.p197
> 
> Fixes: 36995892c271 ("wifi: mwifiex: add host mlme for client mode")
> Cc: stable@vger.kernel.org
> Signed-off-by: Vitor Soares <vitor.soares@toradex.com>

Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>