netdev - [PATCH 4/5] ieee802154: enforce CAP_NET

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Message-Id: <20190920073549.517481-5-gregkh@linuxfoundation.org>
Date:   Fri, 20 Sep 2019 09:35:48 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     netdev@...r.kernel.org
Cc:     isdn@...ux-pingi.de, jreuter@...na.de, ralf@...ux-mips.org,
        alex.aring@...il.com, stefan@...enfreihafen.org,
        orinimron123@...il.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 4/5] ieee802154: enforce CAP_NET_RAW for raw sockets

From: Ori Nimron <orinimron123@...il.com>

When creating a raw AF_IEEE802154 socket, CAP_NET_RAW needs to be
checked first.

Signed-off-by: Ori Nimron <orinimron123@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/ieee802154/socket.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index badc5cfe4dc6..d93d4531aa9b 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -1008,6 +1008,9 @@ static int ieee802154_create(struct net *net, struct socket *sock,
 
 	switch (sock->type) {
 	case SOCK_RAW:
+		rc = -EPERM;
+		if (!capable(CAP_NET_RAW))
+			goto out;
 		proto = &ieee802154_raw_prot;
 		ops = &ieee802154_raw_ops;
 		break;
-- 
2.23.0