diff mbox series

net/bluetooth/cmtp/sock.c: add CAP_NET_RAW check.

Message ID 20200818081555.GA1349@oppo (mailing list archive)
State New, archived
Headers show
Series net/bluetooth/cmtp/sock.c: add CAP_NET_RAW check. | expand

Commit Message

Qingyu Li Aug. 18, 2020, 8:15 a.m. UTC 
When creating a raw PF_BLUETOOTH socket,
CAP_NET_RAW needs to be checked first.

Signed-off-by: Qingyu Li <ieatmuttonchuan@gmail.com>
---
 net/bluetooth/cmtp/sock.c | 3 +++
 1 file changed, 3 insertions(+)

--
2.17.1

Comments

Jesse Brandeburg Aug. 18, 2020, 6:30 p.m. UTC | #1 
On Tue, 18 Aug 2020 16:15:55 +0800
Qingyu Li <ieatmuttonchuan@gmail.com> wrote:

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

Please see my previous replies.
diff mbox series

Patch

diff --git a/net/bluetooth/cmtp/sock.c b/net/bluetooth/cmtp/sock.c
index 96d49d9fae96..476ccc9bee7c 100644
--- a/net/bluetooth/cmtp/sock.c
+++ b/net/bluetooth/cmtp/sock.c
@@ -207,6 +207,9 @@  static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol,
 	if (sock->type != SOCK_RAW)
 		return -ESOCKTNOSUPPORT;

+	if (!capable(CAP_NET_RAW))
+		return -EPERM;
+
 	sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto, kern);
 	if (!sk)
 		return -ENOMEM;