diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index d11db80d24cd..24ac5b376ab0 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -155,7 +155,7 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 	if (sock->state == SS_CONNECTED)
 		return -EINVAL;
 
-	if (addr_len < sizeof(*sa))
+	if (!addr_len || addr_len < sizeof(*sa))
 		return -EINVAL;
 
 	/* If caller uses non-allowed flag, return error. */