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From: Zekun Shen <bruceshenzk@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Zekun Shen <bruceshenzk@gmail.com>,
	Kalle Valo <kvalo@codeaurora.org>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	ath10k@lists.infradead.org, linux-wireless@vger.kernel.org,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] net: ath10k: santity check for ep connectivity
Date: Sun, 21 Jun 2020 22:20:54 -0400	[thread overview]
Message-ID: <20200622022055.16028-1-bruceshenzk@gmail.com> (raw)

Function ep_rx_complete is being called without NULL checking
in ath10k_htc_rx_completion_handler. Without such check, mal-
formed packet is able to cause jump to NULL.

ep->service_id seems a good candidate for sanity check as it is
used in usb.c.

Signed-off-by: Zekun Shen <bruceshenzk@gmail.com>
---
 drivers/net/wireless/ath/ath10k/htc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
index 31df6dd04..e00794d97 100644
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -450,6 +450,11 @@ void ath10k_htc_rx_completion_handler(struct ath10k *ar, struct sk_buff *skb)
 
 	ep = &htc->endpoint[eid];
 
+	if (ep->service_id == 0) {
+		ath10k_warn(ar, "HTC Rx: ep %d is not connect\n", eid);
+		goto out;
+	}
+
 	payload_len = __le16_to_cpu(hdr->len);
 
 	if (payload_len + sizeof(*hdr) > ATH10K_HTC_MAX_LEN) {
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: Zekun Shen <bruceshenzk@gmail.com>
Cc: netdev@vger.kernel.org, linux-wireless@vger.kernel.org,
	linux-kernel@vger.kernel.org, ath10k@lists.infradead.org,
	Zekun Shen <bruceshenzk@gmail.com>,
	Jakub Kicinski <kuba@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Kalle Valo <kvalo@codeaurora.org>
Subject: [PATCH] net: ath10k: santity check for ep connectivity
Date: Sun, 21 Jun 2020 22:20:54 -0400	[thread overview]
Message-ID: <20200622022055.16028-1-bruceshenzk@gmail.com> (raw)

Function ep_rx_complete is being called without NULL checking
in ath10k_htc_rx_completion_handler. Without such check, mal-
formed packet is able to cause jump to NULL.

ep->service_id seems a good candidate for sanity check as it is
used in usb.c.

Signed-off-by: Zekun Shen <bruceshenzk@gmail.com>
---
 drivers/net/wireless/ath/ath10k/htc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
index 31df6dd04..e00794d97 100644
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -450,6 +450,11 @@ void ath10k_htc_rx_completion_handler(struct ath10k *ar, struct sk_buff *skb)
 
 	ep = &htc->endpoint[eid];
 
+	if (ep->service_id == 0) {
+		ath10k_warn(ar, "HTC Rx: ep %d is not connect\n", eid);
+		goto out;
+	}
+
 	payload_len = __le16_to_cpu(hdr->len);
 
 	if (payload_len + sizeof(*hdr) > ATH10K_HTC_MAX_LEN) {
-- 
2.17.1


_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

             reply	other threads:[~2020-06-22  2:21 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-22  2:20 Zekun Shen [this message]
2020-06-22  2:20 ` [PATCH] net: ath10k: santity check for ep connectivity Zekun Shen
2020-12-21 18:15 ` Kalle Valo
2020-12-21 18:15   ` Kalle Valo
2021-01-18 16:12 ` Kalle Valo
2021-01-18 16:12 ` Kalle Valo

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