kernel.git/net/bluetooth/sco.c, branch linux-2.6.32.y

bluetooth: Validate socket address length in sco_sock_bind().

2016-01-29T21:12:43Z

commit 5233252fce714053f0151680933571a2da9cbfb4 upstream. Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings Signed-off-by: Willy Tarreau

Bluetooth: sco: fix information leak to userspace

2011-04-14T23:53:32Z

commit c4c896e1471aec3b004a693c689f60be3b17ac86 upstream. struct sco_conninfo has one padding byte in the end. Local variable cinfo of type sco_conninfo is copied to userspace with this uninizialized one byte, leading to old stack contents leak. Signed-off-by: Vasiliy Kulikov Signed-off-by: Gustavo F. Padovan Signed-off-by: Greg Kroah-Hartman

Bluetooth: Fix potential bad memory access with sysfs files

2010-04-01T22:58:54Z

commit 101545f6fef4a0a3ea8daf0b5b880df2c6a92a69 upstream. When creating a high number of Bluetooth sockets (L2CAP, SCO and RFCOMM) it is possible to scribble repeatedly on arbitrary pages of memory. Ensure that the content of these sysfs files is always less than one page. Even if this means truncating. The files in question are scheduled to be moved over to debugfs in the future anyway. Based on initial patches from Neil Brown and Linus Torvalds Reported-by: Neil Brown Signed-off-by: Marcel Holtmann Signed-off-by: Greg Kroah-Hartman

net: Make setsockopt() optlen be unsigned.

2009-09-30T23:12:20Z

This provides safety against negative optlen at the type level instead of depending upon (sometimes non-trivial) checks against this sprinkled all over the the place, in each and every implementation. Based upon work done by Arjan van de Ven and feedback from Linus Torvalds. Signed-off-by: David S. Miller

Bluetooth: Add proper shutdown support to SCO sockets

2009-08-22T21:11:46Z

The SCO sockets for Bluetooth audio setup and streaming are missing the shutdown implementation. This hasn't been a problem so far, but with a more deeper integration with PulseAudio it is important to shutdown SCO sockets properly. Also the Headset profile 1.2 has more detailed qualification tests that require that SCO and RFCOMM channels are terminated in the right order. A proper shutdown function is necessary for this. Based on a report by Johan Hedberg Signed-off-by: Marcel Holtmann Tested-by: Johan Hedberg

Bluetooth: Ask upper layers for HCI disconnect reason

2009-02-27T05:14:43Z

Some of the qualification tests demand that in case of failures in L2CAP the HCI disconnect should indicate a reason why L2CAP fails. This is a bluntly layer violation since multiple L2CAP connections could be using the same ACL and thus forcing a disconnect reason is not a good idea. To comply with the Bluetooth test specification, the disconnect reason is now stored in the L2CAP connection structure and every time a new L2CAP channel is added it will set back to its default. So only in the case where the L2CAP channel with the disconnect reason is really the last one, it will propagated to the HCI layer. The HCI layer has been extended with a disconnect indication that allows it to ask upper layers for a disconnect reason. The upper layer must not support this callback and in that case it will nicely default to the existing behavior. If an upper layer like L2CAP can provide a disconnect reason that one will be used to disconnect the ACL or SCO link. No modification to the ACL disconnect timeout have been made. So in case of Linux to Linux connection the initiator will disconnect the ACL link before the acceptor side can signal the specific disconnect reason. That is perfectly fine since Linux doesn't make use of this value anyway. The L2CAP layer has a perfect valid error code for rejecting connection due to a security violation. It is unclear why the Bluetooth specification insists on having specific HCI disconnect reason. Signed-off-by: Marcel Holtmann

Bluetooth: Add enhanced security model for Simple Pairing

2009-02-27T05:14:25Z

The current security model is based around the flags AUTH, ENCRYPT and SECURE. Starting with support for the Bluetooth 2.1 specification this is no longer sufficient. The different security levels are now defined as SDP, LOW, MEDIUM and SECURE. Previously it was possible to set each security independently, but this actually doesn't make a lot of sense. For Bluetooth the encryption depends on a previous successful authentication. Also you can only update your existing link key if you successfully created at least one before. And of course the update of link keys without having proper encryption in place is a security issue. The new security levels from the Bluetooth 2.1 specification are now used internally. All old settings are mapped to the new values and this way it ensures that old applications still work. The only limitation is that it is no longer possible to set authentication without also enabling encryption. No application should have done this anyway since this is actually a security issue. Without encryption the integrity of the authentication can't be guaranteed. As default for a new L2CAP or RFCOMM connection, the LOW security level is used. The only exception here are the service discovery sessions on PSM 1 where SDP level is used. To have similar security strength as with a Bluetooth 2.0 and before combination key, the MEDIUM level should be used. This is according to the Bluetooth specification. The MEDIUM level will not require any kind of man-in-the-middle (MITM) protection. Only the HIGH security level will require this. Signed-off-by: Marcel Holtmann

Bluetooth: Reject incoming SCO connections without listeners

2009-02-27T05:14:24Z

All SCO and eSCO connection are auto-accepted no matter if there is a corresponding listening socket for them. This patch changes this and connection requests for SCO and eSCO without any socket are rejected. Signed-off-by: Marcel Holtmann

Bluetooth: Preparation for usage of SOL_BLUETOOTH

2009-02-27T05:14:22Z

The socket option levels SOL_L2CAP, SOL_RFOMM and SOL_SCO are currently in use by various Bluetooth applications. Going forward the common option level SOL_BLUETOOTH should be used. This patch prepares the clean split of the old and new option levels while keeping everything backward compatibility. Signed-off-by: Marcel Holtmann

Bluetooth: Enable per-module dynamic debug messages

2008-11-30T11:17:28Z

With the introduction of CONFIG_DYNAMIC_PRINTK_DEBUG it is possible to allow debugging without having to recompile the kernel. This patch turns all BT_DBG() calls into pr_debug() to support dynamic debug messages. As a side effect all CONFIG_BT_*_DEBUG statements are now removed and some broken debug entries have been fixed. Signed-off-by: Marcel Holtmann