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Luiz Augusto von Dentz 7d6f9cb24d Bluetooth: L2CAP: Fix user-after-free 
[ Upstream commit 35fcbc4243aad7e7d020b7c1dfb14bb888b20a4f ]

This uses l2cap_chan_hold_unless_zero() after calling
__l2cap_get_chan_blah() to prevent the following trace:

Bluetooth: l2cap_core.c:static void l2cap_chan_destroy(struct kref
*kref)
Bluetooth: chan 0000000023c4974d
Bluetooth: parent 00000000ae861c08
==================================================================
BUG: KASAN: use-after-free in __mutex_waiter_is_first
kernel/locking/mutex.c:191 [inline]
BUG: KASAN: use-after-free in __mutex_lock_common
kernel/locking/mutex.c:671 [inline]
BUG: KASAN: use-after-free in __mutex_lock+0x278/0x400
kernel/locking/mutex.c:729
Read of size 8 at addr ffff888006a49b08 by task kworker/u3:2/389

Link: https://lore.kernel.org/lkml/20220622082716.478486-1-lee.jones@linaro.org
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sungwoo Kim <iam@sung-woo.kim>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-10-26 13:22:51 +02:00
..
bnep
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
cmtp
Bluetooth: cmtp: fix possible panic when cmtp_init_sockets() fails
2022-01-27 09:19:29 +01:00
hidp
Bluetooth: hidp: use correct wait queue when removing ctrl_wait
2021-08-26 08:36:15 -04:00
rfcomm
Bluetooth: Fix passing NULL to PTR_ERR
2022-07-29 17:14:19 +02:00
6lowpan.c
Bluetooth: add a mutex lock to avoid UAF in do_enale_set
2020-08-19 08:15:59 +02:00
a2mp.c
Bluetooth: drop HCI device reference before return
2021-03-04 10:26:14 +01:00
a2mp.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284
2019-06-05 17:36:37 +02:00
af_bluetooth.c
net: use skb_queue_empty_lockless() in poll() handlers
2019-10-28 13:33:41 -07:00
amp.c
Bluetooth: Fix null pointer dereference in amp_read_loc_assoc_final_data
2021-03-07 12:20:45 +01:00
amp.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284
2019-06-05 17:36:37 +02:00
ecdh_helper.c
…
ecdh_helper.h
Fix misc new gcc warnings
2021-05-11 14:04:16 +02:00
hci_conn.c
Bluetooth: Disconnect if E0 is used for Level 4
2020-10-17 10:11:22 +02:00
hci_core.c
Bluetooth: Fix the creation of hdev->name
2022-05-15 19:54:47 +02:00
hci_debugfs.c
Bluetooth: Add debug setting for changing minimum encryption key size
2019-08-17 13:54:40 +03:00
hci_debugfs.h
…
hci_event.c
Bluetooth: Fix use after free in hci_send_acl
2022-04-15 14:18:34 +02:00
hci_request.c
bluetooth: eliminate the potential race condition when removing the HCI controller
2021-05-14 09:44:10 +02:00
hci_request.h
Bluetooth: Use controller sets when available
2019-07-06 15:38:18 +02:00
hci_sock.c
Bluetooth: defer cleanup of resources in hci_unregister_dev()
2021-08-12 13:20:58 +02:00
hci_sysfs.c
Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times
2022-10-26 13:22:49 +02:00
Kconfig
bluetooth: switch to AES library
2019-07-26 14:58:12 +10:00
l2cap_core.c
Bluetooth: L2CAP: Fix user-after-free
2022-10-26 13:22:51 +02:00
l2cap_sock.c
Bluetooth: fix use-after-free error in lock_sock_nested()
2021-11-17 09:48:27 +01:00
leds.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
leds.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
lib.c
…
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mgmt_util.c
…
mgmt_util.h
…
mgmt.c
Bluetooth: Fix the HCI to MGMT status conversion table
2021-07-19 08:53:13 +02:00
sco.c
Bluetooth: SCO: Fix sco_send_frame returning skb->len
2022-07-29 17:14:19 +02:00
selftest.c
Bluetooth: Fix compiler warning with selftest duration calculation
2017-10-06 21:49:13 +03:00
selftest.h
…
smp.c
Bluetooth: SMP: Fail if remote and local public keys are identical
2021-05-26 12:05:21 +02:00
smp.h
Bluetooth: SMP: fix crash in unpairing
2018-09-26 12:39:32 +03:00