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Date: Fri, 20 Aug 2010 13:32:22 -0400 (EDT)
From: Josh Bressers <>
Cc: "Steven M. Christey" <>
Subject: Re: CVE request - kernel: jfs: don't allow os2 xattr
 namespace overlap with others

Please use CVE-2010-2946



----- "Eugene Teo" <> wrote:

> Upstream commit: aca0fa34bdaba39bfddddba8ca70dba4782e8fe6
> Description from the commit: It's currently possible to bypass xattr 
> namespace access rules by prefixing valid xattr names with "os2.",
> since 
> the os2 namespace stores extended attributes in a legacy format with
> no 
> prefix.
> This patch adds checking to deny access to any valid namespace prefix
> following "os2.".
> Thanks, Eugene
> -- 
> main(i) { putchar(182623909 >> (i-1) * 5&31|!!(i<7)<<6) && main(++i);
> }

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