[PATCH] Bluetooth: AMP: Fix possible NULL dereference
DORMANTno replies
From: Andrei Emeltchenko <hidden>
Date: 2012-10-04 10:31:07
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
From: Andrei Emeltchenko <redacted> Check that link key exist before accessing. Signed-off-by: Andrei Emeltchenko <redacted> --- net/bluetooth/amp.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c
index c933c72..7e4a1e5 100644
--- a/net/bluetooth/amp.c
+++ b/net/bluetooth/amp.c@@ -185,6 +185,10 @@ int phylink_gen_key(struct hci_conn *conn, u8 *data, u8 *len, u8 *type) *len = HCI_AMP_LINK_KEY_SIZE; key = hci_find_link_key(hdev, &conn->dst); + if (!key) { + BT_DBG("No Link key for conn %p dst %pMR", conn, &conn->dst); + return -EACCES; + } /* BR/EDR Link Key concatenated together with itself */ memcpy(&keybuf[0], key->val, HCI_LINK_KEY_SIZE);
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1.7.9.5