From 5c9eb6b6ba64c4eb927d7a902317410181aacbba Mon Sep 17 00:00:00 2001
From: Hoa Dinh <hoa@dinhvh.me>
Date: Mon, 19 Dec 2022 08:16:32 -0800
Subject: [PATCH] Fixed crash when st_info_list is NULL. Fixes #420. Fixes
CVE-2022-4121.
---
src/low-level/imap/mailimap_types.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/low-level/imap/mailimap_types.c b/src/low-level/imap/mailimap_types.c
index 9923125c..79a0cc23 100644
--- a/src/low-level/imap/mailimap_types.c
+++ b/src/low-level/imap/mailimap_types.c
@@ -1389,9 +1389,11 @@ void
mailimap_mailbox_data_status_free(struct mailimap_mailbox_data_status * info)
{
mailimap_mailbox_free(info->st_mailbox);
- clist_foreach(info->st_info_list, (clist_func) mailimap_status_info_free,
- NULL);
- clist_free(info->st_info_list);
+ if (info->st_info_list != NULL) {
+ clist_foreach(info->st_info_list, (clist_func) mailimap_status_info_free,
+ NULL);
+ clist_free(info->st_info_list);
+ }
free(info);
}