From: Daniel Stenberg <daniel@haxx.se>
Date: Fri, 12 Mar 2021 15:15:13 +0000 (+0100)
Subject: ftp: fix memory leak in ftp_done
X-Git-Tag: curl-7_76_0~68
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8ed71fc4f7116288da75ed85e21fe8c53f4cdfb2;p=thirdparty%2Fcurl.git

ftp: fix memory leak in ftp_done

If after a transfer is complete Curl_GetFTPResponse() returns an error,
curl would not free the ftp->pathalloc block.

Found by torture-testing test 576

Closes #6737
---

diff --git a/lib/ftp.c b/lib/ftp.c
index 8b347e34fd..5bf44f1180 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -3325,8 +3325,10 @@ static CURLcode ftp_done(struct Curl_easy *data, CURLcode status,
       connclose(conn, "Timeout or similar in FTP DONE operation"); /* close */
     }
 
-    if(result)
+    if(result) {
+      Curl_safefree(ftp->pathalloc);
       return result;
+    }
 
     if(ftpc->dont_check && data->req.maxdownload > 0) {
       /* we have just sent ABOR and there is no reliable way to check if it was