From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
commit 96c26653ce65bf84f3212f8b00d4316c1efcbf4c upstream.
... rather than relying on ciptool(8) never passing it anything else. Give
it e.g. an AF_UNIX connected socket (from socketpair(2)) and it'll oops,
trying to evaluate &l2cap_pi(sock->sk)->chan->dst...
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Willy Tarreau <w@xxxxxx>
---
net/bluetooth/cmtp/core.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
index e0a6ebf..84460f6 100644
--- a/net/bluetooth/cmtp/core.c
+++ b/net/bluetooth/cmtp/core.c
@@ -334,6 +334,9 @@ int cmtp_add_connection(struct cmtp_connadd_req *req, struct socket *sock)
BT_DBG("");
+ if (!l2cap_is_socket(sock))
+ return -EBADFD;
+
session = kzalloc(sizeof(struct cmtp_session), GFP_KERNEL);
if (!session)
return -ENOMEM;
--
2.8.0.rc2.1.gbe9624a