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authorAndrei Emeltchenko <andrei.emeltchenko@intel.com>2012-10-05 17:56:53 +0400
committerGustavo Padovan <gustavo.padovan@collabora.co.uk>2012-10-08 02:14:30 +0400
commit079db0c6e3854b3af9808268f3b884fa48ed0034 (patch)
treed65a7dca5ba34a0822d6c2c6721da78401b88cfa /net/bluetooth/amp.c
parentdfee1ebc0e363ff1dc233c4a5246bf3e7f5c5ca6 (diff)
downloadlinux-079db0c6e3854b3af9808268f3b884fa48ed0034.tar.xz
Bluetooth: AMP: Fix possible NULL dereference
Check that link key exist before accessing. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Diffstat (limited to 'net/bluetooth/amp.c')
-rw-r--r--net/bluetooth/amp.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c
index 5dab2d1c7c82..b6e1c3ac74f1 100644
--- a/net/bluetooth/amp.c
+++ b/net/bluetooth/amp.c
@@ -184,6 +184,10 @@ 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);