diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 159b9bc..55f1b06 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -205,12 +205,10 @@ static struct sctp_auth_bytes *sctp_auth_make_key_vector(
         if (chunks)
 		len += ntohs(chunks->param_hdr.length);
 
-	new = kmalloc(sizeof(struct sctp_auth_bytes) + len, gfp);
+	new = sctp_auth_create_key(len, gfp);
 	if (!new)
 		return NULL;
 
-	new->len = len;
-
 	memcpy(new->data, random, ntohs(random->param_hdr.length));
 	offset += ntohs(random->param_hdr.length);