6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Haoxiang Li <haoxiang_li2024@xxxxxxx>
commit d8df010f72b8a32aaea393e36121738bb53ed905 upstream.
Add check for the return value of mgmt_alloc_skb() in
mgmt_device_connected() to prevent null pointer dereference.
Fixes: e96741437ef0 ("Bluetooth: mgmt: Make use of mgmt_send_event_skb in MGMT_EV_DEVICE_CONNECTED")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Haoxiang Li <haoxiang_li2024@xxxxxxx>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/bluetooth/mgmt.c | 3 +++
1 file changed, 3 insertions(+)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -9733,6 +9733,9 @@ void mgmt_device_connected(struct hci_de
sizeof(*ev) + (name ? eir_precalc_len(name_len) : 0) +
eir_precalc_len(sizeof(conn->dev_class)));
+ if (!skb)
+ return;
+
ev = skb_put(skb, sizeof(*ev));
bacpy(&ev->addr.bdaddr, &conn->dst);
ev->addr.type = link_to_bdaddr(conn->type, conn->dst_type);
