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Date:   Sun, 23 Jan 2022 06:57:09 +0100
From:   Soenke Huster <>
To:     Marcel Holtmann <>,
        Johan Hedberg <>,
        Luiz Augusto von Dentz <>,
        "David S. Miller" <>,
        Jakub Kicinski <>
Cc:     Soenke Huster <>,,,
Subject: [PATCH v2] Bluetooth: msft: fix null pointer deref on msft_monitor_device_evt

msft_find_handle_data returns NULL if it can't find the handle.
Therefore, handle_data must be checked, otherwise a null pointer
is dereferenced.

Signed-off-by: Soenke Huster <>
v2: Remove empty line

 net/bluetooth/msft.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/bluetooth/msft.c b/net/bluetooth/msft.c
index 484540855863..9a3d77d3ca86 100644
--- a/net/bluetooth/msft.c
+++ b/net/bluetooth/msft.c
@@ -704,6 +704,8 @@ static void msft_monitor_device_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		   ev->monitor_state, &ev->bdaddr);
 	handle_data = msft_find_handle_data(hdev, ev->monitor_handle, false);
+	if (!handle_data)
+		return;
 	switch (ev->addr_type) {

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