From 1e0b966b738d03d59030e9aea99360edf45fd8b3 Mon Sep 17 00:00:00 2001
From: Jacob Nevins <jacobn@chiark.greenend.org.uk>
Date: Wed, 25 Nov 2020 16:25:21 +0000
Subject: [PATCH] Fix minor memory leak in rsa-sha2-256 userauth.

---
 ssh2userauth.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ssh2userauth.c b/ssh2userauth.c
index 7d3a81e3..01243baf 100644
--- a/ssh2userauth.c
+++ b/ssh2userauth.c
@@ -862,6 +862,7 @@ static void ssh2_userauth_process_queue(PacketProtocolLayer *ppl)
                         s->publickey_algorithm = dupstr("rsa-sha2-512");
                         s->signflags = SSH_AGENT_RSA_SHA2_512;
                     } else if (s->ppl.bpp->ext_info_rsa_sha256_ok) {
+                        sfree(s->publickey_algorithm);
                         s->publickey_algorithm = dupstr("rsa-sha2-256");
                         s->signflags = SSH_AGENT_RSA_SHA2_256;
                     }