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25c150ac10
linux/net/bluetooth
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Ruihan Li 25c150ac10 bluetooth: Perform careful capability checks in hci_sock_ioctl() 
Previously, capability was checked using capable(), which verified that the
caller of the ioctl system call had the required capability. In addition,
the result of the check would be stored in the HCI_SOCK_TRUSTED flag,
making it persistent for the socket.

However, malicious programs can abuse this approach by deliberately sharing
an HCI socket with a privileged task. The HCI socket will be marked as
trusted when the privileged task occasionally makes an ioctl call.

This problem can be solved by using sk_capable() to check capability, which
ensures that not only the current task but also the socket opener has the
specified capability, thus reducing the risk of privilege escalation
through the previously identified vulnerability.

Cc: stable@vger.kernel.org
Fixes: f81f5b2db8 ("Bluetooth: Send control open and close messages for HCI raw sockets")
Signed-off-by: Ruihan Li <lrh2000@pku.edu.cn>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2023-04-23 22:05:39 -07:00
..
bnep bluetooth: Use netif_rx(). 2022-03-07 11:40:41 +00:00
cmtp Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2022-01-17 05:49:30 +02:00
hidp Bluetooth: Fix race condition in hidp_session_thread 2023-04-10 10:22:46 -07:00
rfcomm TTY/Serial driver updates for 6.3-rc1 2023-02-24 12:17:14 -08:00
6lowpan.c iov_iter work; most of that is about getting rid of 2022-12-12 18:29:54 -08:00
a2mp.c use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
a2mp.h Bluetooth: Replace zero-length array with flexible-array member 2020-02-28 08:30:02 +01:00
af_bluetooth.c Bluetooth: Fix not cleanup led when bt_init fails 2022-12-02 13:09:31 -08:00
amp.c Bluetooth: amp: Use the correct print format 2021-06-26 07:12:41 +02:00
amp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
aosp.c Bluetooth: Fix null pointer deref on unexpected status event 2022-08-08 17:04:37 -07:00
aosp.h Bluetooth: aosp: Support AOSP Bluetooth Quality Report 2021-11-02 19:37:52 +01:00
coredump.c Bluetooth: Add support for hci devcoredump 2023-04-23 21:57:59 -07:00
ecdh_helper.c Bluetooth: Use crypto_wait_req 2023-02-13 18:34:48 +08:00
ecdh_helper.h Fix misc new gcc warnings 2021-04-27 17:05:53 -07:00
eir.c Bluetooth: Add initial implementation of BIS connections 2022-07-22 17:13:56 -07:00
eir.h Bluetooth: Add initial implementation of BIS connections 2022-07-22 17:13:56 -07:00
hci_codec.c Bluetooth: Fix support for Read Local Supported Codecs V2 2022-12-02 13:09:31 -08:00
hci_codec.h Bluetooth: Add support for Read Local Supported Codecs V2 2021-09-07 14:09:18 -07:00
hci_conn.c Bluetooth: hci_conn: Fix not waiting for HCI_EVT_LE_CIS_ESTABLISHED 2023-04-23 22:04:01 -07:00
hci_core.c Bluetooth: Add support for hci devcoredump 2023-04-23 21:57:59 -07:00
hci_debugfs.c Bluetooth: fix inconsistent indenting 2023-04-23 22:02:14 -07:00
hci_debugfs.h Bluetooth: hci_core: Move all debugfs handling to hci_debugfs.c 2021-09-22 16:17:13 +02:00
hci_event.c Bluetooth: hci_conn: Add support for linking multiple hcon 2023-04-23 22:03:13 -07:00
hci_request.c Bluetooth: silence a dmesg error message in hci_request.c 2022-12-02 13:09:30 -08:00
hci_request.h Bluetooth: Move hci_abort_conn to hci_conn.c 2022-08-31 15:45:56 -07:00
hci_sock.c bluetooth: Perform careful capability checks in hci_sock_ioctl() 2023-04-23 22:05:39 -07:00
hci_sync.c Bluetooth: Add new quirk for broken set random RPA timeout for ATS2851 2023-04-23 22:04:26 -07:00
hci_sysfs.c Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times 2022-09-21 15:00:54 -07:00
iso.c Bluetooth: hci_conn: Add support for linking multiple hcon 2023-04-23 22:03:13 -07:00
Kconfig Bluetooth: Add CONFIG_BT_LE_L2CAP_ECRED 2022-12-12 14:19:24 -08:00
l2cap_core.c Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp 2023-04-23 22:05:23 -07:00
l2cap_sock.c Bluetooth: L2CAP: Fix potential user-after-free 2023-02-09 14:18:48 -08:00
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 Bluetooth: Fix EALREADY and ELOOP cases in bt_status() 2022-12-12 14:19:24 -08:00
Makefile Bluetooth: Add support for hci devcoredump 2023-04-23 21:57:59 -07:00
mgmt_config.c Bluetooth: mgmt: Use the correct print format 2021-06-26 07:12:42 +02:00
mgmt_config.h Bluetooth: mgmt: Add commands for runtime configuration 2020-06-18 13:11:03 +03:00
mgmt_util.c Bluetooth: Implement support for Mesh 2022-09-06 13:18:24 -07:00
mgmt_util.h Bluetooth: Fix a buffer overflow in mgmt_mesh_add() 2023-01-17 15:50:10 -08:00
mgmt.c Bluetooth: Enable all supported LE PHY by default 2023-04-23 21:59:41 -07:00
msft.c Bluetooth: Convert MSFT filter HCI cmd to hci_sync 2023-04-23 21:48:13 -07:00
msft.h Bluetooth: hci_sync: Refactor remove Adv Monitor 2022-07-21 17:14:55 -07:00
sco.c Bluetooth: SCO: Fix possible circular locking dependency sco_sock_getsockopt 2023-04-10 10:23:45 -07:00
selftest.c crypto: ecdh - move curve_id of ECDH from the key to algorithm name 2021-03-13 00:04:03 +11:00
selftest.h Bluetooth: Add support for self testing framework 2014-12-30 08:53:55 +02:00
smp.c Bluetooth: L2CAP: Delay identity address updates 2023-04-23 21:48:44 -07:00
smp.h Bluetooth: use inclusive language in SMP 2021-06-26 07:12:37 +02:00