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linux/net
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Fedor Pchelkin aa91d54016 Bluetooth: L2CAP: accept zero as a special value for MTU auto-selection 
commit 5c61419e02 upstream.

One of the possible ways to enable the input MTU auto-selection for L2CAP
connections is supposed to be through passing a special "0" value for it
as a socket option. Commit [1] added one of those into avdtp. However, it
simply wouldn't work because the kernel still treats the specified value
as invalid and denies the setting attempt. Recorded BlueZ logs include the
following:

  bluetoothd[496]: profiles/audio/avdtp.c:l2cap_connect() setsockopt(L2CAP_OPTIONS): Invalid argument (22)

[1]: ae5be371a9

Found by Linux Verification Center (linuxtesting.org).

Fixes: 4b6e228e29 ("Bluetooth: Auto tune if input MTU is set to 0")
Cc: stable@vger.kernel.org
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-02-17 09:40:18 +01:00
..
6lowpan 6lowpan: Remove redundant initialisation. 2023-03-29 08:22:52 +01:00
9p 9p/xen: fix release of IRQ 2024-12-09 10:32:57 +01:00
802 net: 802: LLC+SNAP OID:PID lookup on start of skb data 2025-01-17 13:36:11 +01:00
8021q net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb 2024-05-17 12:02:07 +02:00
appletalk appletalk: Fix Use-After-Free in atalk_ioctl 2023-12-20 17:01:50 +01:00
atm atm: Fix Use-After-Free in do_vcc_ioctl 2023-12-20 17:01:48 +01:00
ax25 ax25: rcu protect dev->ax25_ptr 2025-02-08 09:51:55 +01:00
batman-adv batman-adv: Do not let TT changes list grows indefinitely 2024-12-19 18:11:27 +01:00
bluetooth Bluetooth: L2CAP: accept zero as a special value for MTU auto-selection 2025-02-17 09:40:18 +01:00
bpf bpf, test_run: Fix LIVE_FRAME frame update after a page has been recycled 2024-11-08 16:28:19 +01:00
bpfilter net: Use umd_cleanup_helper() 2023-05-31 13:06:57 +02:00
bridge bridge: Handle error of rtnl_register_module(). 2024-10-17 15:24:29 +02:00
caif sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
can net: af_can: do not leave a dangling sk pointer in can_create() 2024-12-14 20:00:04 +01:00
ceph ceph: allocate sparse_ext map only for sparse reads 2025-01-02 10:32:00 +01:00
core net: xdp: Disallow attaching device-bound programs in generic mode 2025-02-08 09:52:31 +01:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-01 21:07:46 -07:00
dccp net: fix data-races around sk->sk_forward_alloc 2025-01-23 17:21:19 +01:00
devlink devlink: fix port new reply cmd type 2024-03-26 18:20:11 -04:00
dns_resolver keys, dns: Fix size check of V1 server-list header 2024-01-25 15:35:41 -08:00
dsa net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events 2024-10-10 11:58:07 +02:00
ethernet ethernet: Add helper for assigning packet type when dest address does not match device address 2024-05-02 16:32:46 +02:00
ethtool net: avoid race between device unregistration and ethnl ops 2025-02-08 09:52:03 +01:00
handshake net/handshake: Fix handshake_req_destroy_test1 2024-02-23 09:24:50 +01:00
hsr net: hsr: fix fill_frame_info() regression vs VLAN packets 2025-02-08 09:52:32 +01:00
ieee802154 net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() 2024-12-14 20:00:04 +01:00
ife net: sched: ife: fix potential use-after-free 2024-01-01 12:42:30 +00:00
ipv4 udp: gso: do not drop small packets when PMTU reduces 2025-02-17 09:40:12 +01:00
ipv6 udp: gso: do not drop small packets when PMTU reduces 2025-02-17 09:40:12 +01:00
iucv s390/iucv: MSG_PEEK causes memory leak in iucv_sock_destruct() 2024-12-09 10:32:33 +01:00
kcm kcm: Serialise kcm_sendmsg() for the same socket. 2024-08-29 17:33:46 +02:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-08-18 12:44:56 -07:00
l2tp ipv6: introduce dst_rt6_info() helper 2024-12-14 19:59:35 +01:00
l3mdev l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu 2022-04-15 14:27:24 -07:00
lapb net: lapb: Use list_for_each_entry() to simplify code in lapb_iface.c 2021-06-08 16:31:25 -07:00
llc net: llc: reset skb->transport_header 2025-01-09 13:32:01 +01:00
mac80211 wifi: mac80211: don't flush non-uploaded STAs 2025-02-08 09:51:58 +01:00
mac802154 mac802154: check local interfaces before deleting sdata list 2025-01-23 17:21:13 +01:00
mctp net: mctp: handle skb cleanup on sock_queue failures 2025-01-09 13:31:54 +01:00
mpls ipv6: introduce dst_rt6_info() helper 2024-12-14 19:59:35 +01:00
mptcp mptcp: handle fastopen disconnect correctly 2025-02-08 09:52:37 +01:00
ncsi net/ncsi: fix locking in Get MAC Address handling 2025-02-17 09:40:11 +01:00
netfilter netfilter: nf_tables: reject mismatching sum of field_len with set key length 2025-02-08 09:52:35 +01:00
netlabel calipso: fix memory leak in netlbl_calipso_add_pass() 2024-01-25 15:35:14 -08:00
netlink sock_diag: add module pointer to "struct sock_diag_handler" 2024-12-09 10:32:09 +01:00
netrom netrom: check buffer length before accessing it 2025-01-09 13:32:00 +01:00
nfc nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies 2024-08-19 06:04:28 +02:00
nsh nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). 2024-05-17 12:02:02 +02:00
openvswitch openvswitch: fix lockup on tx to unregistering netdev with carrier 2025-01-23 17:21:09 +01:00
packet af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK 2025-01-09 13:32:02 +01:00
phonet phonet: Handle error of rtnl_register_module(). 2024-10-17 15:24:30 +02:00
psample psample: Require 'CAP_NET_ADMIN' when joining "packets" group 2023-12-13 18:45:10 +01:00
qrtr net: qrtr: Update packets cloning when broadcasting 2024-10-04 16:29:41 +02:00
rds net:rds: Fix possible deadlock in rds_message_put 2024-08-19 06:04:27 +02:00
rfkill net: rfkill: gpio: Add check for clk_enable() 2024-12-09 10:32:11 +01:00
rose net: rose: lock the socket in rose_bind() 2025-02-17 09:40:13 +01:00
rxrpc rxrpc: Fix call state set to not include the SERVER_SECURING state 2025-02-17 09:40:14 +01:00
sched netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() 2025-02-17 09:40:14 +01:00
sctp sctp: sysctl: plpmtud_probe_interval: avoid using current->nsproxy 2025-01-17 13:36:18 +01:00
smc net/smc: fix data error when recvmsg with MSG_PEEK flag 2025-02-08 09:51:58 +01:00
strparser strparser: pad sk_skb_cb to avoid straddling cachelines 2022-07-08 18:38:44 -07:00
sunrpc Revert "SUNRPC: Reduce thread wake-up rate when receiving large RPC messages" 2025-02-08 09:52:35 +01:00
switchdev net: bridge: switchdev: Skip MDB replays of deferred events on offload 2024-03-01 13:35:06 +01:00
tipc tipc: re-order conditions in tipc_crypto_key_rcv() 2025-02-17 09:40:09 +01:00
tls tls: Fix tls_sw_sendmsg error handling 2025-01-17 13:36:13 +01:00
unix splice: do not checksum AF_UNIX sockets 2024-12-19 18:11:21 +01:00
vmw_vsock vsock: Allow retrying on connect() failure 2025-02-08 09:52:31 +01:00
wireless wifi: cfg80211: adjust allocation of colocated AP data 2025-02-08 09:52:01 +01:00
x25 net/x25: fix incorrect parameter validation in the x25_getsockopt() function 2024-03-26 18:19:41 -04:00
xdp xsk: fix OOB map writes when deleting elements 2024-12-14 19:59:57 +01:00
xfrm xfrm: replay: Fix the update of replay_esn->oseq_hi for GSO 2025-02-08 09:52:28 +01:00
compat.c net/compat: Update msg_control_is_user when setting a kernel pointer 2023-04-14 11:09:27 +01:00
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
Kconfig bpf: Add fd-based tcx multi-prog infra with link support 2023-07-19 10:07:27 -07:00
Kconfig.debug net: make NET_(DEV|NS)_REFCNT_TRACKER depend on NET 2022-09-20 14:23:56 -07:00
Makefile net/handshake: Create a NETLINK service for handling handshake requests 2023-04-19 18:48:48 -07:00
socket.c net: explicitly clear the sk pointer, when pf->create fails 2024-10-17 15:24:35 +02:00
sysctl_net.c sysctl: treewide: drop unused argument ctl_table_root::set_ownership(table) 2024-08-11 12:47:13 +02:00