A worthwhile overview:

http://blogs.zdnet.com/Bott/?p=1575


Alex
 

-----Original Message-----
From: [email protected] [mailto:[email protected]] On 
Behalf Of Nick FitzGerald
Sent: Thursday, December 03, 2009 4:45 PM
To: [email protected]
Subject: Re: [funsec] Black screen

Robert Slade wrote:

> Microsoft has announced, today, that they have absolutely no idea what 
> the problem is, but it is *not* *their* *fault*.

As a news story, this started several days back:

   http://www.theregister.co.uk/2009/11/30/prevx_microsoft_black_screen/

   http://www.theregister.co.uk/2009/12/02/black_screen_u_turn/

but the actual story started about a week ago:

   
http://www.prevx.com/blog/140/Black-Screen-woes-could-affect-millions-on-Windows--Vista-and-XP.html

Prevx has since withdraw its claims that the MS updates mentioned in that 
article are implicated at all:

   http://www.prevx.com/blog/141/Windows-Black-Screen-Root-Cause.html

...and it seems all the fuss is due to one part of Windows expecting that a (or 
"some" or "all" -- not quite clear) REG_SZ strings will be null-terminated as 
stored in the registry (or, at least, as output by standard regsitry query API 
calls), and the fact that the registry value setting API calls do not enforce 
null-termination of said REG_SZ string values.

Oh, and MS has known about this for a long time...

At a minimum, read the second Prevx item linked above for some of the juicy 
technical details.  It seems that SysInternals, among others, discovered the 
root cause of this problem several years ago.



Regards,

Nick FitzGerald


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