From b9be9f9466665f259696bc8903a239ed8fd793a2 Mon Sep 17 00:00:00 2001
From: Jay Satiro <raysatiro@yahoo.com>
Date: Tue, 26 Aug 2025 22:33:38 -0400
Subject: [PATCH] schannel: fix memory leak during handshake

Follow-up to b6a5f672 which improved the handshake procedure.

Ref: https://github.com/curl/curl/pull/18323

Closes https://github.com/curl/curl/pull/18410
---
 lib/vtls/schannel.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/vtls/schannel.c b/lib/vtls/schannel.c
index 7fb4cb1fde..e75351f12f 100644
--- a/lib/vtls/schannel.c
+++ b/lib/vtls/schannel.c
@@ -1246,6 +1246,7 @@ schannel_connect_step2(struct Curl_cfilter *cf, struct Curl_easy *data)
     if(!SOCKET_WRITABLE(Curl_conn_cf_get_socket(cf, data), 0)) {
       SCH_DEV(infof(data, "schannel: handshake waiting for writeable socket"));
       connssl->io_need = CURL_SSL_IO_NEED_SEND;
+      free(inbuf[0].pvBuffer);
       return CURLE_OK;
     }