[Bug 27090] Gecko/Mono installer crashes on wow64 setups (memory corruption?/HTTPREQ_QueryDataAvailable)

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=27090

--- Comment #20 from Sami Aario <saempylae at gmail.com> 2012-07-07 16:36:53 CDT ---
It looks like it could be a buffer overflow. If you look at Jerome's log in
Attachment 34595, line 38396 reads:

0017:trace:wininet:refill_read_buffer read 4344 bytes, read_size 11584

This is right before the unhandled exception occurs. Looking at the relevant
code, refill_read_buffer in http.c uses req->read_buf, which has a size defined
as READ_BUFFER_SIZE == 8192 in internet.h

I went through the log and all the other refill_read_buffer traces I looked at
had a read_size <= 8192. Not the final word, but I did look at a lot of them.

I can't investigate this further right now, so please take a look if you want.

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