[PATCH 3.2 73/77] bluetooth: Validate socket address length in sco_sock_bind().

[Ben Hutchings]

3.2.75-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: "David S. Miller" <davem@xxxxxxxxxxxxx>

[ Upstream commit 5233252fce714053f0151680933571a2da9cbfb4 ]

Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 net/bluetooth/sco.c | 3 +++
 1 file changed, 3 insertions(+)

--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -475,6 +475,9 @@ static int sco_sock_bind(struct socket *
 	if (!addr || addr->sa_family != AF_BLUETOOTH)
 		return -EINVAL;
 
+	if (addr_len < sizeof(struct sockaddr_sco))
+		return -EINVAL;
+
 	lock_sock(sk);
 
 	if (sk->sk_state != BT_OPEN) {

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