From dec362a766fbf5d6774dd699b6044841e042f8a5 Mon Sep 17 00:00:00 2001
From: =?utf8?q?R=C3=A9mi=20Bernon?= <rbernon@codeweavers.com>
Date: Thu, 10 Jun 2021 10:06:24 +0200
Subject: [PATCH] hid: Check preparsed data magic in
 HidP_GetLinkCollectionNodes.
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Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@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;
 
-- 
2.11.4.GIT