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Subject[PATCH 4.14 048/185] mISDN: enforce CAP_NET_RAW for raw sockets
Date
From: Ori Nimron <orinimron123@gmail.com>

[ Upstream commit b91ee4aa2a2199ba4d4650706c272985a5a32d80 ]

When creating a raw AF_ISDN 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>
---
drivers/isdn/mISDN/socket.c | 2 ++
1 file changed, 2 insertions(+)

--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -766,6 +766,8 @@ base_sock_create(struct net *net, struct

if (sock->type != SOCK_RAW)
return -ESOCKTNOSUPPORT;
+ if (!capable(CAP_NET_RAW))
+ return -EPERM;

sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern);
if (!sk)

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