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linux/net
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Oleh Konko 7ab69426e7 Bluetooth: SMP: force responder MITM requirements before building the pairing response 
commit d05111bfe3 upstream.

smp_cmd_pairing_req() currently builds the pairing response from the
initiator auth_req before enforcing the local BT_SECURITY_HIGH
requirement. If the initiator omits SMP_AUTH_MITM, the response can
also omit it even though the local side still requires MITM.

tk_request() then sees an auth value without SMP_AUTH_MITM and may
select JUST_CFM, making method selection inconsistent with the pairing
policy the responder already enforces.

When the local side requires HIGH security, first verify that MITM can
be achieved from the IO capabilities and then force SMP_AUTH_MITM in the
response in both rsp.auth_req and auth. This keeps the responder auth bits
and later method selection aligned.

Fixes: 2b64d153a0 ("Bluetooth: Add MITM mechanism to LE-SMP")
Cc: stable@vger.kernel.org
Suggested-by: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Signed-off-by: Oleh Konko <security@1seal.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-04-18 10:33:32 +02:00
..
6lowpan 6lowpan: iphc: Fix an off-by-one check of array index 2021-07-22 16:19:03 +02:00
9p net/9p: fix double req put in p9_fd_cancelled 2025-10-19 16:21:28 +02:00
802 net: 802: LLC+SNAP OID:PID lookup on start of skb data 2025-01-23 17:15:49 +01:00
8021q net: vlan: sync VLAN features with lower device 2025-12-07 06:09:26 +09:00
appletalk net: appletalk: Fix use-after-free in AARP proxy probe 2025-08-28 16:24:04 +02:00
atm atm: lec: fix use-after-free in sock_def_readable() 2026-04-18 10:33:29 +02:00
ax25 ax25: properly unshare skbs in ax25_kiss_rcv() 2025-09-09 18:50:20 +02:00
batman-adv batman-adv: avoid OGM aggregation when skb tailroom is insufficient 2026-04-18 10:33:19 +02:00
bluetooth Bluetooth: SMP: force responder MITM requirements before building the pairing response 2026-04-18 10:33:32 +02:00
bpf bpf: Do not let BPF test infra emit invalid GSO types to stack 2026-02-06 16:41:58 +01:00
bpfilter bpfilter: Specify the log level for the kmsg message 2021-06-25 13:13:50 +02:00
bridge bridge: br_nd_send: linearize skb before parsing ND options 2026-04-18 10:33:29 +02:00
caif caif: fix integer underflow in cffrml_receive() 2026-01-19 13:09:44 +01:00
can can: gw: fix OOB heap access in cgw_csum_crc8_rel() 2026-04-18 10:33:27 +02:00
ceph libceph: admit message frames only in CEPH_CON_S_OPEN state 2026-04-18 10:33:14 +02:00
core rtnetlink: count IFLA_INFO_SLAVE_KIND in if_nlmsg_size 2026-04-18 10:33:24 +02:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-11 15:13:53 +02:00
dccp net: fix data-races around sk->sk_forward_alloc 2025-01-23 17:16:04 +01:00
dns_resolver keys, dns: Fix size check of V1 server-list header 2024-01-25 14:52:46 -08:00
dsa net: dsa: free routing table on probe failure 2026-02-19 16:21:45 +01:00
ethernet gro: remove rcu_read_lock/rcu_read_unlock from gro_complete handlers 2024-09-12 11:07:47 +02:00
ethtool ethtool: add support to set/get tx copybreak buf size via ethtool 2026-03-04 07:19:36 -05:00
hsr net: hsr: fix VLAN add unwind on slave errors 2026-04-18 10:33:31 +02:00
ieee802154 net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() 2024-12-14 19:51:37 +01:00
ife net: sched: ife: fix potential use-after-free 2024-01-05 15:13:29 +01:00
ipv4 esp: fix skb leak with espintcp and async crypto 2026-04-18 10:33:24 +02:00
ipv6 ipv6: avoid overflows in ip6_datagram_send_ctl() 2026-04-18 10:33:31 +02:00
iucv s390/iucv: fix receive buffer virtual vs physical address confusion 2024-09-04 13:23:27 +02:00
kcm kcm: Serialise kcm_sendmsg() for the same socket. 2024-09-04 13:23:32 +02:00
key af_key: validate families in pfkey_send_migrate() 2026-04-18 10:33:24 +02:00
l2tp l2tp: do not use sock_hold() in pppol2tp_session_get_sock() 2026-04-18 10:33:17 +02:00
l3mdev net: Add l3mdev index to flow struct and avoid oif reset for port devices 2024-10-17 15:11:57 +02:00
lapb net: lapb: Use list_for_each_entry() to simplify code in lapb_iface.c 2021-06-08 16:31:25 -07:00
llc llc: fix data loss when reading from a socket in llc_ui_recvmsg() 2025-06-04 14:38:06 +02:00
mac80211 wifi: mac80211: fix NULL deref in mesh_matches_local() 2026-04-18 10:33:21 +02:00
mac802154 mac802154: check local interfaces before deleting sdata list 2025-01-23 17:16:00 +01:00
mctp net: mctp: Prevent duplicate binds 2025-08-28 16:24:20 +02:00
mpls mpls: Use rcu_dereference_rtnl() in mpls_route_input_rcu(). 2025-06-27 11:05:36 +01:00
mptcp mptcp: pm: avoid sending RM_ADDR over same subflow 2026-04-18 10:33:19 +02:00
ncsi net: ncsi: fix skb leak in error paths 2026-04-18 10:33:15 +02:00
netfilter netfilter: nf_tables: reject immediate NF_QUEUE verdict 2026-04-18 10:33:30 +02:00
netlabel calipso: unlock rcu before returning -EAFNOSUPPORT 2025-06-27 11:05:22 +01:00
netlink netlink: avoid infinite retry looping in netlink_unicast() 2025-08-28 16:24:15 +02:00
netrom netrom: fix double-free in nr_route_frame() 2026-02-06 16:41:58 +01:00
nfc nfc: nci: fix circular locking dependency in nci_close_device 2026-04-18 10:33:24 +02:00
nsh nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). 2024-05-17 11:50:48 +02:00
openvswitch openvswitch: validate MPLS set/set_masked payload length 2026-04-18 10:33:24 +02:00
packet net: fix fanout UAF in packet_release() via NETDEV_UP race 2026-04-18 10:33:25 +02:00
phonet phonet/pep: Move call to pn_skb_get_dst_sockaddr() earlier in pep_sock_accept() 2025-08-28 16:23:59 +02:00
psample psample: Require 'CAP_NET_ADMIN' when joining "packets" group 2023-12-13 18:36:37 +01:00
qrtr net: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak 2026-04-18 10:33:29 +02:00
rds rds: ib: reject FRMR registration before IB connection is established 2026-04-18 10:33:30 +02:00
rfkill net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer 2025-10-02 13:39:09 +02:00
rose net/rose: fix NULL pointer dereference in rose_transmit_link on reconnect 2026-04-18 10:33:20 +02:00
rxrpc rxrpc: Fix oops due to non-existence of prealloc backlog struct 2025-07-17 18:30:48 +02:00
sched net/sched: cls_flow: fix NULL pointer dereference on shared blocks 2026-04-18 10:33:31 +02:00
sctp sctp: move SCTP_CMD_ASSOC_SHKEY right after SCTP_CMD_PEER_INIT 2026-02-06 16:41:52 +01:00
smc net/smc: fix double-free of smc_spd_priv when tee() duplicates splice pipe buffer 2026-04-18 10:33:24 +02:00
strparser strparser: Fix signed/unsigned mismatch bug 2025-12-07 06:09:29 +09:00
sunrpc sunrpc: fix cache_request leak in cache_release 2026-04-18 10:33:17 +02:00
switchdev net: make switchdev_bridge_port_{,unoffload} loosely coupled with the bridge 2021-08-04 12:35:07 +01:00
tipc tipc: fix divide-by-zero in tipc_sk_filter_connect() 2026-04-18 10:33:14 +02:00
tls tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock(). 2026-02-06 16:42:01 +01:00
unix af_unix: Don't leave consecutive consumed OOB skbs. 2025-10-02 13:39:14 +02:00
vmw_vsock vmw_vsock: bypass false-positive Wnonnull warning with gcc-16 2026-03-04 07:20:11 -05:00
wireless wifi: cfg80211: cancel rfkill_block work in wiphy_unregister() 2026-04-18 10:33:19 +02:00
x25 net/x25: Fix overflow when accumulating packets 2026-04-18 10:33:31 +02:00
xdp xsk: fix OOB map writes when deleting elements 2024-12-14 19:51:33 +01:00
xfrm xfrm: Fix the usage of skb->sk 2026-04-18 10:33:24 +02:00
compat.c net: Return the correct errno code 2021-06-03 15:13:56 -07:00
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
Kconfig Remove DECnet support from kernel 2023-06-21 15:59:15 +02:00
Makefile Remove DECnet support from kernel 2023-06-21 15:59:15 +02:00
socket.c net: Remove RTNL dance for SIOCBRADDIF and SIOCBRDELIF. 2026-01-19 13:10:11 +01:00
sysctl_net.c net: Ensure net namespace isolation of sysctls 2021-04-12 13:27:11 -07:00