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authorAl Viro <viro@zeniv.linux.org.uk>2014-12-19 06:20:58 +0000
committerMarcel Holtmann <marcel@holtmann.org>2014-12-19 13:48:21 +0100
commit96c26653ce65bf84f3212f8b00d4316c1efcbf4c (patch)
tree3c3b126c115469e4bd0413b92b2919c912edb964 /net
parent51bda2bca53b265715ca1852528f38dc67429d9a (diff)
Bluetooth: cmtp: cmtp_add_connection() should verify that it's dealing with l2cap socket
... 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@zeniv.linux.org.uk> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/cmtp/core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
index 67fe5e84e68f..278a194e6af4 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;