mshtml: Fix out-of-bounds props access.

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com> Signed-off-by: Jacek Caban <jacek@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

mshtml: Fix out-of-bounds props access.
2868e935 · Gabriel Ivăncescu · Alexandre Julliard · 8718a23b · 2868e935
Commit 2868e935 authored Sep 15, 2021 by Gabriel Ivăncescu Committed by Alexandre Julliard Sep 16, 2021
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dispex.c dlls/mshtml/dispex.c +1 -1

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--- a/dlls/mshtml/dispex.c
+++ b/dlls/mshtml/dispex.c
@@ -1736,7 +1736,7 @@ static HRESULT WINAPI DispatchEx_DeleteMemberByDispID(IDispatchEx *iface, DISPID
        DWORD idx = id - DISPID_DYNPROP_0;
        dynamic_prop_t *prop;

-        if(!get_dynamic_data(This) || idx > This->dynamic_data->prop_cnt)
+        if(!get_dynamic_data(This) || idx >= This->dynamic_data->prop_cnt)
            return S_OK;

        prop = This->dynamic_data->props + idx;