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Date:	Tue, 22 Jul 2014 15:27:59 -0700
From:	Andy Lutomirski <>
To:	Kamal Mostafa <>
Cc:	"" <>,
	stable <>,,
	Roland McGrath <>,
	"H. Peter Anvin" <>
Subject: Re: [PATCH 3.8 106/116] x86_32, entry: Do syscall exit work on badsys (CVE-2014-4508)

On Tue, Jul 22, 2014 at 3:21 PM, Kamal Mostafa <> wrote:
> -stable review patch.  If anyone has any objections, please let me know.
> ------------------
> From: Andy Lutomirski <>
> commit 554086d85e71f30abe46fc014fea31929a7c6a8a upstream.
> The bad syscall nr paths are their own incomprehensible route
> through the entry control flow.  Rearrange them to work just like
> syscalls that return -ENOSYS.
> This fixes an OOPS in the audit code when fast-path auditing is
> enabled and sysenter gets a bad syscall nr (CVE-2014-4508).
> This has probably been broken since Linux 2.6.27:
> af0575bba0 i386 syscall audit fast-path

Don't apply this without:


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