oss-security - Re: CVE Request: use after free bug in "quota" handling in hugetlb code

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Date: Tue, 24 Apr 2012 09:23:16 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
CC: Marcus Meissner <meissner@...e.de>
Subject: Re: CVE Request: use after free bug in "quota" handling
 in hugetlb code

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On 04/24/2012 08:34 AM, Marcus Meissner wrote:
> Hi,
> 
> Reported by Schacher Raindel, quoting his report:
> 
> There is a use after free bug in the kernel hugetlb code. The bug
> can allow an authenticated, unprivileged local attacker to crash
> the system (and possibly gain higher privileges) if huge pages are
> enabled in the system.
> 
> A fix has been committed to upstream, commit 
> 90481622d75715bfcb68501280a917dbfe516029 "hugepages: fix use after
> free bug in "quota" handling"
> 
> Version-Release number of selected component (if applicable): The
> bug exists in kernel versions 2.6.24 and above.
> 
> References: https://bugzilla.novell.com/show_bug.cgi?id=758532 
> https://bugzilla.redhat.com/show_bug.cgi?id=815065 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=90481622d75715bfcb68501280a917dbfe516029
>
>  Ciao, Marcus

Please use CVE-2012-2133 for this issue.

- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993

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