From 83ecf9261fe3704fa53d5fb804426018a18562ac Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 8 May 2023 14:33:54 +0200
Subject: [PATCH] [PATCH] libssh2: free fingerprint better

Reported-by: Wei Chong Tan
Closes #11088

Gbp-Pq: Name CVE-2023-28319.patch
---
 lib/vssh/libssh2.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/vssh/libssh2.c b/lib/vssh/libssh2.c
index 4703eb57..c5bbdd1f 100644
--- a/lib/vssh/libssh2.c
+++ b/lib/vssh/libssh2.c
@@ -723,11 +723,10 @@ static CURLcode ssh_check_fingerprint(struct Curl_easy *data)
      */
     if((pub_pos != b64_pos) ||
        strncmp(fingerprint_b64, pubkey_sha256, pub_pos)) {
-      free(fingerprint_b64);
-
       failf(data,
             "Denied establishing ssh session: mismatch sha256 fingerprint. "
             "Remote %s is not equal to %s", fingerprint_b64, pubkey_sha256);
+      free(fingerprint_b64);
       state(data, SSH_SESSION_FREE);
       sshc->actualcode = CURLE_PEER_FAILED_VERIFICATION;
       return sshc->actualcode;
-- 
2.30.2