Rémi Bernon : hid: Check preparsed data magic in HidP_GetLinkCollectionNodes.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: dec362a766fbf5d6774dd699b6044841e042f8a5
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=dec362a766fbf5d6774dd699b...

Author: Rémi Bernon <rbernon(a)codeweavers.com>
Date:   Thu Jun 10 10:06:24 2021 +0200

hid: Check preparsed data magic in HidP_GetLinkCollectionNodes.

Signed-off-by: Rémi Bernon <rbernon(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/hid/hidp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/hid/hidp.c b/dlls/hid/hidp.c
index a7003717a21..2933c2ff7ef 100644
--- a/dlls/hid/hidp.c
+++ b/dlls/hid/hidp.c
@@ -1001,6 +1001,9 @@ NTSTATUS WINAPI HidP_GetLinkCollectionNodes(HIDP_LINK_COLLECTION_NODE *LinkColle
 
     TRACE("(%p, %p, %p)\n", LinkCollectionNode, LinkCollectionNodeLength, PreparsedData);
 
+    if (data->magic != HID_MAGIC)
+        return HIDP_STATUS_INVALID_PREPARSED_DATA;
+
     if (*LinkCollectionNodeLength < data->caps.NumberLinkCollectionNodes)
         return HIDP_STATUS_BUFFER_TOO_SMALL;