From 3489ee9a6fb8ceb674a4d72eeaf09b3ddfa60a2d Mon Sep 17 00:00:00 2001
From: Will Cosgrove <will@panic.com>
Date: Mon, 11 Apr 2022 09:46:52 -0700
Subject: [PATCH] NULL check before calling session_handshake

---
 tests/ossfuzz/ssh2_client_fuzzer.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/ossfuzz/ssh2_client_fuzzer.cc b/tests/ossfuzz/ssh2_client_fuzzer.cc
index d9f5ab516c..f0a63f4fd9 100644
--- a/tests/ossfuzz/ssh2_client_fuzzer.cc
+++ b/tests/ossfuzz/ssh2_client_fuzzer.cc
@@ -61,7 +61,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
     libssh2_session_set_blocking(session, 1);
   }
 
-  if(libssh2_session_handshake(session, socket_fds[0])) {
+  if(session && libssh2_session_handshake(session, socket_fds[0])) {
     goto EXIT_LABEL;
   }