| From foo@baz Mon 17 Aug 2020 11:30:21 AM CEST |
| From: Qingyu Li <ieatmuttonchuan@gmail.com> |
| Date: Mon, 10 Aug 2020 09:51:00 +0800 |
| Subject: net/nfc/rawsock.c: add CAP_NET_RAW check. |
| |
| From: Qingyu Li <ieatmuttonchuan@gmail.com> |
| |
| [ Upstream commit 26896f01467a28651f7a536143fe5ac8449d4041 ] |
| |
| 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> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| net/nfc/rawsock.c | 7 +++++-- |
| 1 file changed, 5 insertions(+), 2 deletions(-) |
| |
| --- a/net/nfc/rawsock.c |
| +++ b/net/nfc/rawsock.c |
| @@ -332,10 +332,13 @@ static int rawsock_create(struct net *ne |
| if ((sock->type != SOCK_SEQPACKET) && (sock->type != SOCK_RAW)) |
| return -ESOCKTNOSUPPORT; |
| |
| - if (sock->type == SOCK_RAW) |
| + if (sock->type == SOCK_RAW) { |
| + if (!capable(CAP_NET_RAW)) |
| + return -EPERM; |
| sock->ops = &rawsock_raw_ops; |
| - else |
| + } else { |
| sock->ops = &rawsock_ops; |
| + } |
| |
| sk = sk_alloc(net, PF_NFC, GFP_ATOMIC, nfc_proto->proto, kern); |
| if (!sk) |
