linux-stable.git/net/bluetooth, branch v4.4.76 Linux kernel stable tree Bluetooth: Fix user channel for 32bit userspace on 64bit kernel 2017-05-20T12:27:02+00:00 Szymon Janc szymon.janc@codecoup.pl 2017-04-25T01:25:04+00:00 ff1c4cf24642a3598fd9adc7e110d0df2610d1d8 commit ab89f0bdd63a3721f7cd3f064f39fc4ac7ca14d4 upstream. Running 32bit userspace on 64bit kernel results in MSG_CMSG_COMPAT being defined as 0x80000000. This results in sendmsg failure if used from 32bit userspace running on 64bit kernel. Fix this by accounting for MSG_CMSG_COMPAT in flags check in hci_sock_sendmsg. Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl> Signed-off-by: Marko Kiiskila <marko@runtime.io> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit ab89f0bdd63a3721f7cd3f064f39fc4ac7ca14d4 upstream.

Running 32bit userspace on 64bit kernel results in MSG_CMSG_COMPAT being
defined as 0x80000000. This results in sendmsg failure if used from 32bit
userspace running on 64bit kernel. Fix this by accounting for MSG_CMSG_COMPAT
in flags check in hci_sock_sendmsg.

Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
Signed-off-by: Marko Kiiskila <marko@runtime.io>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU 2016-08-20T16:09:19+00:00 Amadeusz Sławiński amadeusz.slawinski@tieto.com 2016-07-14T08:50:23+00:00 5c93b99d27ffe7d1a3c6d43429bd1966b4c353dc commit 23bc6ab0a0912146fd674a0becc758c3162baabc upstream. When we retrieve imtu value from userspace we should use 16 bit pointer cast instead of 32 as it's defined that way in headers. Fixes setsockopt calls on big-endian platforms. Signed-off-by: Amadeusz Sławiński <amadeusz.slawinski@tieto.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 23bc6ab0a0912146fd674a0becc758c3162baabc upstream.

When we retrieve imtu value from userspace we should use 16 bit pointer
cast instead of 32 as it's defined that way in headers. Fixes setsockopt
calls on big-endian platforms.

Signed-off-by: Amadeusz Sławiński <amadeusz.slawinski@tieto.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bluetooth: Fix potential buffer overflow with Add Advertising 2016-04-12T16:08:54+00:00 Johan Hedberg johan.hedberg@intel.com 2016-03-11T07:56:33+00:00 f0de3cec40ee0f365751e11a477e47dd5568c34e commit 6a0e78072c2ae7b20b14e0249d8108441ea928d2 upstream. The Add Advertising command handler does the appropriate checks for the AD and Scan Response data, however fails to take into account the general length of the mgmt command itself, which could lead to potential buffer overflows. This patch adds the necessary check that the mgmt command length is consistent with the given ad and scan_rsp lengths. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 6a0e78072c2ae7b20b14e0249d8108441ea928d2 upstream.

The Add Advertising command handler does the appropriate checks for
the AD and Scan Response data, however fails to take into account the
general length of the mgmt command itself, which could lead to
potential buffer overflows. This patch adds the necessary check that
the mgmt command length is consistent with the given ad and scan_rsp
lengths.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bluetooth: 6lowpan: Fix handling of uncompressed IPv6 packets 2016-03-03T23:07:16+00:00 Lukasz Duda lukasz.duda@nordicsemi.no 2016-01-13T15:57:48+00:00 8cf0f282de522d9f44dc2e0f6f58361fdef4d722 commit 87f5fedb3bebbbb566f847dd0c567fcea49a36a6 upstream. This patch fixes incorrect handling of the 6lowpan packets that contain uncompressed IPv6 header. RFC4944 specifies a special dispatch for 6lowpan to carry uncompressed IPv6 header. This dispatch (1 byte long) has to be removed during reception and skb data pointer has to be moved. To correctly point in the beginning of the IPv6 header the dispatch byte has to be pulled off before packet can be processed by netif_rx_in(). Test scenario: IPv6 packets are not correctly interpreted by the network layer when IPv6 header is not compressed (e.g. ICMPv6 Echo Reply is not propagated correctly to the ICMPv6 layer because the extra byte will make the header look corrupted). Similar approach is done for IEEE 802.15.4. Signed-off-by: Lukasz Duda <lukasz.duda@nordicsemi.no> Signed-off-by: Glenn Ruben Bakke <glenn.ruben.bakke@nordicsemi.no> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 87f5fedb3bebbbb566f847dd0c567fcea49a36a6 upstream.

This patch fixes incorrect handling of the 6lowpan packets that contain
uncompressed IPv6 header.

RFC4944 specifies a special dispatch for 6lowpan to carry uncompressed
IPv6 header. This dispatch (1 byte long) has to be removed during
reception and skb data pointer has to be moved. To correctly point in
the beginning of the IPv6 header the dispatch byte has to be pulled off
before packet can be processed by netif_rx_in().

Test scenario: IPv6 packets are not correctly interpreted by the network
layer when IPv6 header is not compressed (e.g. ICMPv6 Echo Reply is not
propagated correctly to the ICMPv6 layer because the extra byte will make
the header look corrupted).

Similar approach is done for IEEE 802.15.4.

Signed-off-by: Lukasz Duda <lukasz.duda@nordicsemi.no>
Signed-off-by: Glenn Ruben Bakke <glenn.ruben.bakke@nordicsemi.no>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bluetooth: 6lowpan: Fix kernel NULL pointer dereferences 2016-03-03T23:07:16+00:00 Glenn Ruben Bakke glenn.ruben.bakke@nordicsemi.no 2016-01-13T15:41:42+00:00 cf5d2ff495fdf7b7c3936166ca18f7d37d4f6c25 commit 4c58f3282e3de43d34f8955f8eca676294380bf9 upstream. The fixes provided in this patch assigns a valid net_device structure to skb before dispatching it for further processing. Scenario #1: ============ Bluetooth 6lowpan receives an uncompressed IPv6 header, and dispatches it to netif. The following error occurs: Null pointer dereference error #1 crash log: [ 845.854013] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 [ 845.855785] IP: [<ffffffff816e3d36>] enqueue_to_backlog+0x56/0x240 ... [ 845.909459] Call Trace: [ 845.911678] [<ffffffff816e3f64>] netif_rx_internal+0x44/0xf0 The first modification fixes the NULL pointer dereference error by assigning dev to the local_skb in order to set a valid net_device before processing the skb by netif_rx_ni(). Scenario #2: ============ Bluetooth 6lowpan receives an UDP compressed message which needs further decompression by nhc_udp. The following error occurs: Null pointer dereference error #2 crash log: [ 63.295149] BUG: unable to handle kernel NULL pointer dereference at 0000000000000840 [ 63.295931] IP: [<ffffffffc0559540>] udp_uncompress+0x320/0x626 [nhc_udp] The second modification fixes the NULL pointer dereference error by assigning dev to the local_skb in the case of a udp compressed packet. The 6lowpan udp_uncompress function expects that the net_device is set in the skb when checking lltype. Signed-off-by: Glenn Ruben Bakke <glenn.ruben.bakke@nordicsemi.no> Signed-off-by: Lukasz Duda <lukasz.duda@nordicsemi.no> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 4c58f3282e3de43d34f8955f8eca676294380bf9 upstream.

The fixes provided in this patch assigns a valid net_device structure to
skb before dispatching it for further processing.

Scenario #1:
============

Bluetooth 6lowpan receives an uncompressed IPv6 header, and dispatches it
to netif. The following error occurs:

Null pointer dereference error #1 crash log:

[  845.854013] BUG: unable to handle kernel NULL pointer dereference at
               0000000000000048
[  845.855785] IP: [<ffffffff816e3d36>] enqueue_to_backlog+0x56/0x240
...
[  845.909459] Call Trace:
[  845.911678]  [<ffffffff816e3f64>] netif_rx_internal+0x44/0xf0

The first modification fixes the NULL pointer dereference error by
assigning dev to the local_skb in order to set a valid net_device before
processing the skb by netif_rx_ni().

Scenario #2:
============

Bluetooth 6lowpan receives an UDP compressed message which needs further
decompression by nhc_udp. The following error occurs:

Null pointer dereference error #2 crash log:

[   63.295149] BUG: unable to handle kernel NULL pointer dereference at
               0000000000000840
[   63.295931] IP: [<ffffffffc0559540>] udp_uncompress+0x320/0x626
               [nhc_udp]

The second modification fixes the NULL pointer dereference error by
assigning dev to the local_skb in the case of a udp compressed packet.
The 6lowpan udp_uncompress function expects that the net_device is set in
the skb when checking lltype.

Signed-off-by: Glenn Ruben Bakke <glenn.ruben.bakke@nordicsemi.no>
Signed-off-by: Lukasz Duda <lukasz.duda@nordicsemi.no>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bluetooth: Fix incorrect removing of IRKs 2016-03-03T23:07:16+00:00 Johan Hedberg johan.hedberg@intel.com 2016-01-26T19:31:31+00:00 701495c14d09658bffe78e0e605f298752edd36c commit cff10ce7b4f02718ffd25e3914e60559f5ef6ca0 upstream. The commit cad20c278085d893ebd616cd20c0747a8e9d53c7 was supposed to fix handling of devices first using public addresses and then switching to RPAs after pairing. Unfortunately it missed a couple of key places in the code. 1. When evaluating which devices should be removed from the existing white list we also need to consider whether we have an IRK for them or not, i.e. a call to hci_find_irk_by_addr() is needed. 2. In smp_notify_keys() we should not be requiring the knowledge of the RPA, but should simply keep the IRK around if the other conditions require it. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit cff10ce7b4f02718ffd25e3914e60559f5ef6ca0 upstream.

The commit cad20c278085d893ebd616cd20c0747a8e9d53c7 was supposed to
fix handling of devices first using public addresses and then
switching to RPAs after pairing. Unfortunately it missed a couple of
key places in the code.

1. When evaluating which devices should be removed from the existing
white list we also need to consider whether we have an IRK for them or
not, i.e. a call to hci_find_irk_by_addr() is needed.

2. In smp_notify_keys() we should not be requiring the knowledge of
the RPA, but should simply keep the IRK around if the other conditions
require it.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bluetooth: Use continuous scanning when creating LE connections 2016-03-03T23:07:16+00:00 Johan Hedberg johan.hedberg@intel.com 2015-12-03T10:45:19+00:00 c76633bf38205c9ee640096eb387dce31cb8b8c9 commit 2f99536a5b34d5b0f54723067d68f6cef3f0fdc6 upstream. All LE connections are now triggered through a preceding passive scan and waiting for a connectable advertising report. This means we've got the best possible guarantee that the device is within range and should be able to request the controller to perform continuous scanning. This way we minimize the risk that we miss out on any advertising packets. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 2f99536a5b34d5b0f54723067d68f6cef3f0fdc6 upstream.

All LE connections are now triggered through a preceding passive scan
and waiting for a connectable advertising report. This means we've got
the best possible guarantee that the device is within range and should
be able to request the controller to perform continuous scanning. This
way we minimize the risk that we miss out on any advertising packets.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
bluetooth: Validate socket address length in sco_sock_bind(). 2015-12-15T20:39:08+00:00 David S. Miller davem@davemloft.net 2015-12-15T20:39:08+00:00 5233252fce714053f0151680933571a2da9cbfb4 Signed-off-by: David S. Miller <davem@davemloft.net> 
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2015-12-03T17:04:05+00:00 David S. Miller davem@davemloft.net 2015-12-03T17:04:05+00:00 79aecc7216379788e0c6900ac50ea2d579190219 Johan Hedberg says: ==================== pull request: bluetooth 2015-12-01 Here's a Bluetooth fix for the 4.4-rc series that fixes a memory leak of the Security Manager L2CAP channel that'll happen for every LE connection. Please let me know if there are any issues pulling. Thanks. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> 
Johan Hedberg says:

====================
pull request: bluetooth 2015-12-01

Here's a Bluetooth fix for the 4.4-rc series that fixes a memory leak of
the Security Manager L2CAP channel that'll happen for every LE
connection.

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA 2015-12-01T20:45:05+00:00 Eric Dumazet edumazet@google.com 2015-11-30T04:03:10+00:00 9cd3e072b0be17446e37d7414eac8a3499e0601e This patch is a cleanup to make following patch easier to review. Goal is to move SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA from (struct socket)->flags to a (struct socket_wq)->flags to benefit from RCU protection in sock_wake_async() To ease backports, we rename both constants. Two new helpers, sk_set_bit(int nr, struct sock *sk) and sk_clear_bit(int net, struct sock *sk) are added so that following patch can change their implementation. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
This patch is a cleanup to make following patch easier to
review.

Goal is to move SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA
from (struct socket)->flags to a (struct socket_wq)->flags
to benefit from RCU protection in sock_wake_async()

To ease backports, we rename both constants.

Two new helpers, sk_set_bit(int nr, struct sock *sk)
and sk_clear_bit(int net, struct sock *sk) are added so that
following patch can change their implementation.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>