Commit 08d2af93 authored Sep 20, 2019 by Ori Nimron Committed by Greg Kroah-Hartman Oct 05, 2019

appletalk: enforce CAP_NET_RAW for raw sockets



[ Upstream commit 6cc03e8aa36c51f3b26a0d21a3c4ce2809c842ac ]

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

Signed-off-by: Ori Nimron <orinimron123@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent bb439ee2

net/appletalk/ddp.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -1029,6 +1029,11 @@ static int atalk_create(struct net net, struct socket sock, int protocol,
		*/
		if (sock->type != SOCK_RAW && sock->type != SOCK_DGRAM)
		goto out;

		rc = -EPERM;
		if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
		goto out;

		rc = -ENOMEM;
		sk = sk_alloc(net, PF_APPLETALK, GFP_KERNEL, &ddp_proto, kern);
		if (!sk)