From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
... 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>
---
net/bluetooth/cmtp/core.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
index 67fe5e8..fd57db8 100644
--- a/net/bluetooth/cmtp/core.c
+++ b/net/bluetooth/cmtp/core.c
@@ -333,6 +333,8 @@ int cmtp_add_connection(struct cmtp_connadd_req *req, struct socket *sock)
int i, err;
BT_DBG("");
+ if (!l2cap_is_socket(sock))
+ return -EBADFD;
session = kzalloc(sizeof(struct cmtp_session), GFP_KERNEL);
if (!session)
--
2.1.3
--
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