[CVE-2011-2492] Bluetooth: l2cap and rfcomm: fix 1 byte infoleak to userspace.

[Andy Whitcroft]

CVE-2011-2492
	The bluetooth subsystem in the Linux kernel before 3.0-rc4
	does not properly initialize certain data structures,
	which allows local users to obtain potentially sensitive
	information from kernel memory via a crafted getsockopt system
	call, related to (1) the l2cap_sock_getsockopt_old function in
	net/bluetooth/l2cap_sock.c and (2) the rfcomm_sock_getsockopt_old
	function in net/bluetooth/rfcomm/sock.c.

This fix has reached oneiric via upstream.  Following this email is a
patch for hardy, lucid, lucid/fsl-imx51, maverick, maverick/ti-omap4,
natty, and natty/ti-omap4.  This patch is a simple backport from the
mainline commit and identicle for all releases.

Proposing for hardy, lucid, lucid/fsl-imx51, maverick, maverick/ti-omap4,
natty, and natty/ti-omap4.

-apw