From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Sat, 15 Feb 2025 18:43:22 +0000 (+0200)
Subject: imap: Fix crash with Maildir when trying to send INPROGRESS during mailbox syncing
X-Git-Tag: 2.4.1~195
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6631584e8038f61aec9ade9c27140eec5e85078e;p=thirdparty%2Fdovecot%2Fcore.git

imap: Fix crash with Maildir when trying to send INPROGRESS during mailbox syncing

Mailbox syncing could have been done outside command context, in which case
there is no global event.
---

diff --git a/src/imap/imap-storage-callbacks.c b/src/imap/imap-storage-callbacks.c
index 7cd31007ff..ad741fb83c 100644
--- a/src/imap/imap-storage-callbacks.c
+++ b/src/imap/imap-storage-callbacks.c
@@ -44,7 +44,7 @@ static void notify_no(struct mailbox *mailbox ATTR_UNUSED,
 
 static const char *find_cmd_tag(struct event *event)
 {
-	const struct event_field *field =
+	const struct event_field *field = event == NULL ? NULL :
 		event_find_field_recursive(event, "cmd_tag");
 	return field != NULL && field->value_type == EVENT_FIELD_VALUE_TYPE_STR ?
 	       field->value.str : NULL;