From 67b7b383b24ecdd100146276f0c2f033608e4ae2 Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Fri, 4 Dec 2020 11:32:06 +0100
Subject: [PATCH] wrapper: Avoid memory leak on errors during key exchange

As reported by oss-fuzz

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28075

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
(cherry picked from commit 9c6404aa4976a6259509df37fda1e0399e0e1212)
---
 src/wrapper.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/wrapper.c b/src/wrapper.c
index 7e57ab5d..06fbe5f9 100644
--- a/src/wrapper.c
+++ b/src/wrapper.c
@@ -182,6 +182,7 @@ void crypto_free(struct ssh_crypto_struct *crypto)
         crypto->ecdh_privkey = NULL;
     }
 #endif
+    SAFE_FREE(crypto->dh_server_signature);
     if (crypto->session_id != NULL) {
         explicit_bzero(crypto->session_id, crypto->digest_len);
         SAFE_FREE(crypto->session_id);