From 38b804157124cad1fb7d936205216b212a0e3935 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Fri, 18 May 2018 13:42:07 +0200
Subject: Fix use after free

---
 openssl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/openssl.c b/openssl.c
index 8c107c2..84ab4de 100644
--- a/openssl.c
+++ b/openssl.c
@@ -151,8 +151,8 @@ BOOL ssl_checkCertificateHash(epoll_server_t *server)
 		if (server->serverData->fingerprint[i] != 0) {
 			unsigned char md[EVP_MAX_MD_SIZE];
 			unsigned int n = 20;
-			X509_free(cert);
 			X509_digest(cert, sha1, md, &n);
+			X509_free(cert);
 			return n == 20 && memcmp(md, server->serverData->fingerprint, n) == 0;
 		}
 	}
-- 
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