netdev - [PATCH 3/5] ax25: enforce CAP_NET

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Message-Id: <20190920073549.517481-4-gregkh@linuxfoundation.org>
Date:   Fri, 20 Sep 2019 09:35:47 +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 3/5] ax25: enforce CAP_NET_RAW for raw sockets

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

When creating a raw AF_AX25 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/ax25/af_ax25.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index ca5207767dc2..bb222b882b67 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -855,6 +855,8 @@ static int ax25_create(struct net *net, struct socket *sock, int protocol,
 		break;
 
 	case SOCK_RAW:
+		if (!capable(CAP_NET_RAW))
+			return -EPERM;
 		break;
 	default:
 		return -ESOCKTNOSUPPORT;
-- 
2.23.0