diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 17eb09d222ff4e865ccd3c8766d54aad5bfaf34f..ec78a04eb136e8bfd31e9ce3ab2d1b0a7ed29be1 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -122,8 +122,10 @@ static void alg_do_release(const struct af_alg_type *type, void *private)
 
 int af_alg_release(struct socket *sock)
 {
-	if (sock->sk)
+	if (sock->sk) {
 		sock_put(sock->sk);
+		sock->sk = NULL;
+	}
 	return 0;
 }
 EXPORT_SYMBOL_GPL(af_alg_release);