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mISDN: enforce CAP_NET_RAW for raw sockets

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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>
This commit is contained in:
Ori Nimron 2019-09-20 09:35:45 +02:00 committed by David S. Miller
parent 3d66b89c30
commit b91ee4aa2a
1 changed files with 2 additions and 0 deletions
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2
drivers/isdn/mISDN/socket.c
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@ -754,6 +754,8 @@ base_sock_create(struct net *net, struct socket *sock, int protocol, int kern)
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)