From 8a86ccf343f7cb882d886bbdd763ad31b602c944 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 14 Aug 2023 13:43:33 +0200
Subject: [PATCH] imap: add a check for failing strdup()

---
 lib/imap.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/imap.c b/lib/imap.c
index b8c220569c..de64c2a7f2 100644
--- a/lib/imap.c
+++ b/lib/imap.c
@@ -1115,7 +1115,10 @@ static CURLcode imap_state_select_resp(struct Curl_easy *data, int imapcode,
     }
     else {
       /* Note the currently opened mailbox on this connection */
+      DEBUGASSERT(!imapc->mailbox);
       imapc->mailbox = strdup(imap->mailbox);
+      if(!imapc->mailbox)
+        return CURLE_OUT_OF_MEMORY;
 
       if(imap->custom)
         result = imap_perform_list(data);