hid: Check preparsed data magic in HidP_GetLinkCollectionNodes.

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

hid: Check preparsed data magic in HidP_GetLinkCollectionNodes.
dec362a7 · Rémi Bernon · Alexandre Julliard · b99da49a · dec362a7
Commit dec362a7 authored Jun 10, 2021 by Rémi Bernon Committed by Alexandre Julliard Jun 10, 2021
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hidp.c dlls/hid/hidp.c +3 -0

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--- 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;