linux-kernel - [PATCH] [211/223] econet: fix CVE-2010-3850

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Date:	Mon, 13 Dec 2010 00:48:38 +0100 (CET)
From:	Andi Kleen <andi@...stfloor.org>
To:	philb@....org, davem@...emloft.net, gregkh@...e.de,
	ak@...ux.intel.com, linux-kernel@...r.kernel.org, stable@...nel.org
Subject: [PATCH] [211/223] econet: fix CVE-2010-3850

2.6.35-longterm review patch.  If anyone has any objections, please let me know.

------------------
From: Phil Blundell <philb@....org>

commit 16c41745c7b92a243d0874f534c1655196c64b74 upstream.

Add missing check for capable(CAP_NET_ADMIN) in SIOCSIFADDR operation.

Signed-off-by: Phil Blundell <philb@....org>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
Signed-off-by: Andi Kleen <ak@...ux.intel.com>

---
 net/econet/af_econet.c |    3 +++
 1 file changed, 3 insertions(+)

Index: linux/net/econet/af_econet.c
===================================================================
--- linux.orig/net/econet/af_econet.c
+++ linux/net/econet/af_econet.c
@@ -661,6 +661,9 @@ static int ec_dev_ioctl(struct socket *s
 	err = 0;
 	switch (cmd) {
 	case SIOCSIFADDR:
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+
 		edev = dev->ec_ptr;
 		if (edev == NULL) {
 			/* Magic up a new one. */
--
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