linux-kernel - namespaces: Out-of-bounds array access

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Date:	Fri, 06 Jan 2012 01:18:47 +0100
From:	Richard Weinberger <richard@....at>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	daniel.lezcano@...e.fr,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: namespaces: Out-of-bounds array access

Hi!

While searching a completely different bug I've found this problem:
If CONFIG_NET_NS, CONFIG_UTS_NS and CONFIG_IPC_NS are disabled, ns_entries[]
becomes empty and things like ns_entries[ARRAY_SIZE(ns_entries) - 1] will explode.

Thanks,
//richard

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