[PATCH 2/6] server: Return STATUS_KEY_DELETED when trying to retrieve the full name of a deleted key.
Zebediah Figura
z.figura12 at gmail.com
Tue Jun 29 23:31:16 CDT 2021
This fixes a server crash that can be triggered by deleting a key and then
trying to retrieve its name. In that case key->parent is NULL.
Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
---
server/registry.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/server/registry.c b/server/registry.c
index f36760e6cc1..b7971770728 100644
--- a/server/registry.c
+++ b/server/registry.c
@@ -413,6 +413,12 @@ static WCHAR *key_get_full_name( struct object *obj, data_size_t *ret_len )
data_size_t len = sizeof(root_name) - sizeof(WCHAR);
char *ret;
+ if (key->flags & KEY_DELETED)
+ {
+ set_error( STATUS_KEY_DELETED );
+ return NULL;
+ }
+
for (key = (struct key *)obj; key != root_key; key = key->parent) len += key->namelen + sizeof(WCHAR);
if (!(ret = malloc( len ))) return NULL;
--
2.30.2
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