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net/nfc/rawsock.c: add CAP_NET_RAW check. 

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

Signed-off-by: Qingyu Li <ieatmuttonchuan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Qingyu Li 2020-08-10 09:51:00 +08:00 committed by David S. Miller
parent 1dab5877e8
commit 26896f0146
1 changed files with 5 additions and 2 deletions
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7
net/nfc/rawsock.c
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@ -328,10 +328,13 @@ static int rawsock_create(struct net *net, struct socket *sock,
if ((sock->type != SOCK_SEQPACKET) && (sock->type != SOCK_RAW)) if ((sock->type != SOCK_SEQPACKET) && (sock->type != SOCK_RAW))
return -ESOCKTNOSUPPORT; return -ESOCKTNOSUPPORT;
if (sock->type == SOCK_RAW) if (sock->type == SOCK_RAW) {
if (!capable(CAP_NET_RAW))
return -EPERM;
sock->ops = &rawsock_raw_ops; sock->ops = &rawsock_raw_ops;
else } else {
sock->ops = &rawsock_ops; sock->ops = &rawsock_ops;
}
sk = sk_alloc(net, PF_NFC, GFP_ATOMIC, nfc_proto->proto, kern); sk = sk_alloc(net, PF_NFC, GFP_ATOMIC, nfc_proto->proto, kern);
if (!sk) if (!sk)