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* [PATCH] net/nfc/rawsock.c: add CAP_NET_RAW check.
@ 2020-08-10  1:51 Qingyu Li
  2020-08-11 17:35 ` David Miller
  0 siblings, 1 reply; 2+ messages in thread
From: Qingyu Li @ 2020-08-10  1:51 UTC (permalink / raw)
  To: kuba, davem; +Cc: netdev, linux-kernel

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

Signed-off-by: Qingyu Li <ieatmuttonchuan@gmail.com>
---
 net/nfc/rawsock.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

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)
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 2+ messages in thread

* Re: [PATCH] net/nfc/rawsock.c: add CAP_NET_RAW check.
  2020-08-10  1:51 [PATCH] net/nfc/rawsock.c: add CAP_NET_RAW check Qingyu Li
@ 2020-08-11 17:35 ` David Miller
  0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2020-08-11 17:35 UTC (permalink / raw)
  To: ieatmuttonchuan; +Cc: kuba, netdev, linux-kernel

From: Qingyu Li <ieatmuttonchuan@gmail.com>
Date: Mon, 10 Aug 2020 09:51:00 +0800

> When creating a raw AF_NFC socket, CAP_NET_RAW needs to be checked first.
> 
> Signed-off-by: Qingyu Li <ieatmuttonchuan@gmail.com>

Applied and queued up for -stable, thank you.

^ permalink raw reply	[flat|nested] 2+ messages in thread

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