linux-kernel - [PATCH 01/32] staging: wfx: add sanity checks to hif

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Date:   Wed,  1 Apr 2020 13:03:34 +0200
From:   Jerome Pouiller <Jerome.Pouiller@...abs.com>
To:     devel@...verdev.osuosl.org, linux-wireless@...r.kernel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jérôme Pouiller 
        <jerome.pouiller@...abs.com>
Subject: [PATCH 01/32] staging: wfx: add sanity checks to hif_join()

From: Jérôme Pouiller <jerome.pouiller@...abs.com>

Add a few check on start of hif_join().

Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
---
 drivers/staging/wfx/hif_tx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/wfx/hif_tx.c b/drivers/staging/wfx/hif_tx.c
index 77bca43aca42..445906035e9d 100644
--- a/drivers/staging/wfx/hif_tx.c
+++ b/drivers/staging/wfx/hif_tx.c
@@ -297,6 +297,8 @@ int hif_join(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf,
 	struct hif_req_join *body = wfx_alloc_hif(sizeof(*body), &hif);
 
 	WARN_ON(!conf->basic_rates);
+	WARN_ON(sizeof(body->ssid) < ssidlen);
+	WARN(!conf->ibss_joined && !ssidlen, "joining an unknown BSS");
 	body->infrastructure_bss_mode = !conf->ibss_joined;
 	body->short_preamble = conf->use_short_preamble;
 	if (channel && channel->flags & IEEE80211_CHAN_NO_IR)
-- 
2.25.1