diff --git a/[refs] b/[refs]
index 1415b2619c90..72d33ec0643b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f2455eb176ac87081bbfc9a44b21c7cd2bc1967e
+refs/heads/master: 328fc47ea0bcc27d9afa69c3ad6e52431cadd76c
diff --git a/trunk/net/sctp/socket.c b/trunk/net/sctp/socket.c
index afa952e726d7..9b9b2c31dd15 100644
--- a/trunk/net/sctp/socket.c
+++ b/trunk/net/sctp/socket.c
@@ -3144,7 +3144,7 @@ static int sctp_setsockopt_auth_key(struct sock *sk,
 		goto out;
 	}
 
-	if (authkey->sca_keylength > optlen) {
+	if (authkey->sca_keylength > optlen - sizeof(struct sctp_authkey)) {
 		ret = -EINVAL;
 		goto out;
 	}