bluetooth: Validate socket address length in sco_sock_bind().

commit 5233252fce714053f0151680933571a2da9cbfb4 upstream.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Willy Tarreau <w@1wt.eu>

diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index e52443ce4f9c2cc9a1fe3f60eef59be98b9eb2ea..735b5fb8e2044bd5e0c4eff79725ea6df3ac1246 100644 (file)
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -463,6 +463,9 @@ static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_le
        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) {