diff --git a/kernel/sucompat.c b/kernel/sucompat.c
index bf0c34d3..854e1576 100644
--- a/kernel/sucompat.c
+++ b/kernel/sucompat.c
@@ -161,8 +161,25 @@ int ksu_handle_execve_sucompat(int *fd, const char __user **filename_user,
 	if (unlikely(!filename_user))
 		return 0;
 
-	memset(path, 0, sizeof(path));
-	ksu_strncpy_from_user_nofault(path, *filename_user, sizeof(path));
+	/*
+	 * nofault variant fails silently due to pagefault_disable
+	 * some cpus dont really have that good speculative execution
+	 * access_ok to substitute set_fs, we check if pointer is accessible
+	 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,0,0)
+	if (!access_ok(VERIFY_READ, *filename_user, sizeof(path)))
+		return 0;
+#else
+	if (!access_ok(*filename_user, sizeof(path)))
+		return 0;
+#endif
+	// success = returns number of bytes and should be less than path
+	long len = strncpy_from_user(path, *filename_user, sizeof(path));
+	if (len <= 0)
+		return 0;
+
+	// strncpy_from_user_nofault does this too
+	path[sizeof(path) - 1] = '\0';
 
 	if (likely(memcmp(path, su, sizeof(su))))
 		return 0;