[Bug 20553] Invalid read in LISTVIEW_NCDestroy in chromium unit_tests.exe in TableViewTest.Sort?

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=20553





--- Comment #8 from Nikolay Sivov <bunglehead at gmail.com>  2009-11-14 10:08:54 ---
(In reply to comment #7)
> Thanks for the analysis!  I see this is not the first time this has come up;
> see http://www.mail-archive.com/wine-devel@winehq.com/msg15702.html

Here was another problem discussed in this thread (corrupting heap overwriting
area marked free), and it doesn't exist any more. Currently I see a possible
fix for that using following condition:

---
HeapSize(GetProcessHeap(), 0, himl) >= sizeof(void*)
---

to determine if required field available to read. This will prevent from
reading out of allocated area. Failure will be indicated by -1 return value.
This check should be next after checking himl for null.

P.S. I'm using sizeof(void*) here instead of sizeof(DWORD) cause of bug 20696
where I think it's possible to use vtable pointer as a magic (HIMAGELIST isn't
reusable for another process anyway).

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