From: Qingyu Li <ieatmuttonchuan@gmail.com>
To: davem@davemloft.net, kuba@kernel.org
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] nfc: enforce CAP_NET_RAW for raw sockets When creating a raw AF_NFC socket, CAP_NET_RAW needs to be checked first.
Date: Thu, 6 Aug 2020 10:28:08 +0800 [thread overview]
Message-ID: <20200806022808.GA17066@oppo> (raw)
Signed-off-by: Qingyu Li <ieatmuttonchuan@gmail.com>
---
net/nfc/rawsock.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index ba5ffd3badd3..c1302b689a98 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -332,8 +332,11 @@ 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
sock->ops = &rawsock_ops;
next reply other threads:[~2020-08-06 2:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-06 2:28 Qingyu Li [this message]
2020-08-06 18:30 ` [PATCH] nfc: enforce CAP_NET_RAW for raw sockets When creating a raw AF_NFC socket, CAP_NET_RAW needs to be checked first Jakub Kicinski
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