diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index ce925f3a5249..57e4601eaaf5 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1488,7 +1488,7 @@ static int tls_decrypt_sg(struct sock *sk, struct iov_iter *out_iov,
 	 */
 	aead_size = sizeof(*aead_req) + crypto_aead_reqsize(ctx->aead_recv);
 	aead_size = ALIGN(aead_size, __alignof__(*dctx));
-	mem = kmalloc(aead_size + struct_size(dctx, sg, n_sgin + n_sgout),
+	mem = kmalloc(aead_size + struct_size(dctx, sg, size_add(n_sgin, n_sgout)),
 		      sk->sk_allocation);
 	if (!mem) {
 		err = -ENOMEM;