linux-kernel - [44/44] econet: fix CVE-2010-3850

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Date:	Tue, 07 Dec 2010 16:04:43 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Phil Blundell <philb@....org>,
	"David S. Miller" <davem@...emloft.net>
Subject: [44/44] econet: fix CVE-2010-3850

2.6.27-stable review patch.  If anyone has any objections, please let us 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>

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

--- a/net/econet/af_econet.c
+++ b/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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