[PATCH] net/bluetooth/rfcomm/sock.c: add CAP_NET_RAW check.
From: Qingyu Li <hidden>
Date: 2020-08-18 08:34:04
Also in:
lkml, netdev
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
When creating a raw PF_BLUETOOTH socket, CAP_NET_RAW needs to be checked first. Signed-off-by: Qingyu Li <redacted> --- net/bluetooth/rfcomm/sock.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index ae6f80730561..d67d49e5aa00 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c@@ -321,6 +321,9 @@ static int rfcomm_sock_create(struct net *net, struct socket *sock, if (sock->type != SOCK_STREAM && sock->type != SOCK_RAW) return -ESOCKTNOSUPPORT; + if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) + return -EPERM; + sock->ops = &rfcomm_sock_ops; sk = rfcomm_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); --
2.17.1