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Bluetooth: cmtp: cmtp_add_connection() should verify that it's dealing with l2cap socket

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... 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...

Bug: 33982955
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Change-Id: I078260c1b5be6a96b54c265da0236bf84842e450
This commit is contained in:
Al Viro 2014-12-19 06:20:58 +00:00 committed by Artem Borisov
parent 0a2214f20a
commit 6155dc22d2
1 changed files with 3 additions and 0 deletions
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3
net/bluetooth/cmtp/core.c
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@ -335,6 +335,9 @@ 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;