| From 3532101fa63e21cc08fdd2788b4c20e1cbb60d6c Mon Sep 17 00:00:00 2001 |
| From: Qingyu Li <ieatmuttonchuan@gmail.com> |
| Date: Mon, 10 Aug 2020 09:51:00 +0800 |
| Subject: [PATCH] net/nfc/rawsock.c: add CAP_NET_RAW check. |
| |
| commit 26896f01467a28651f7a536143fe5ac8449d4041 upstream. |
| |
| 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: Paul Gortmaker <paul.gortmaker@windriver.com> |
| |
| diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c |
| index ba5ffd3badd3..b5c867fe3232 100644 |
| --- a/net/nfc/rawsock.c |
| +++ b/net/nfc/rawsock.c |
| @@ -332,10 +332,13 @@ static int rawsock_create(struct net *net, struct socket *sock, |
| 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) |
| -- |
| 2.27.0 |
| |
