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MoYuanhao 8aa9d1ff5b tcp: check space before adding MPTCP SYN options 
commit 06d64ab46f upstream.

Ensure there is enough space before adding MPTCP options in
tcp_syn_options().

Without this check, 'remaining' could underflow, and causes issues. If
there is not enough space, MPTCP should not be used.

Signed-off-by: MoYuanhao <moyuanhao3676@163.com>
Fixes: cec37a6e41 ("mptcp: Handle MP_CAPABLE options for outgoing connections")
Cc: stable@vger.kernel.org
Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
[ Matt: Add Fixes, cc Stable, update Description ]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20241209-net-mptcp-check-space-syn-v1-1-2da992bb6f74@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-12-19 18:12:59 +01:00
..
6lowpan ipv6: eliminate ndisc_ops_is_useropt() 2024-08-12 17:23:57 -07:00
9p 9p/xen: fix release of IRQ 2024-12-05 14:03:06 +01:00
802 move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
8021q netdev_features: remove NETIF_F_ALL_FCOE 2024-09-03 11:36:43 +02:00
appletalk Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-05-09 10:01:01 -07:00
atm atm: clean up a put_user() calls 2024-06-14 19:08:50 -07:00
ax25 ax25: Replace kfree() in ax25_dev_free() with ax25_dev_put() 2024-06-01 15:49:42 -07:00
batman-adv move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
bluetooth Bluetooth: Support new quirks for ATS2851 2024-12-14 20:03:56 +01:00
bpf bpf, test_run: Fix LIVE_FRAME frame update after a page has been recycled 2024-10-31 16:15:21 +01:00
bridge bridge: Handle error of rtnl_register_module(). 2024-10-10 15:39:35 +02:00
caif move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
can net: af_can: do not leave a dangling sk pointer in can_create() 2024-12-14 20:03:47 +01:00
ceph libceph: use min() to simplify code in ceph_dns_resolve_name() 2024-08-27 09:30:16 +02:00
core netpoll: Use rcu_access_pointer() in __netpoll_setup 2024-12-14 20:03:58 +01:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-01 21:07:46 -07:00
dccp dccp: Fix memory leak in dccp_feat_change_recv 2024-12-14 20:03:05 +01:00
devlink devlink: Constify the 'table_ops' parameter of devl_dpipe_table_register() 2024-06-05 10:24:57 +01:00
dns_resolver Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
dsa net: dsa: refuse cross-chip mirroring operations 2024-10-09 19:41:35 -07:00
ethernet netkit: Fix pkt_type override upon netkit pass verdict 2024-05-25 10:48:57 -07:00
ethtool ethtool: Fix wrong mod state in case of verbose and no_mask bitset 2024-12-14 20:03:08 +01:00
handshake net/handshake: use sockfd_put() helper 2024-08-27 16:09:25 -07:00
hsr net: hsr: must allocate more bytes for RedBox support 2024-12-14 20:03:06 +01:00
ieee802154 net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() 2024-12-14 20:03:47 +01:00
ife net: sched: ife: fix potential use-after-free 2023-12-15 10:50:18 +00:00
ipv4 tcp: check space before adding MPTCP SYN options 2024-12-19 18:12:59 +01:00
ipv6 net/tcp: Add missing lockdep annotations for TCP-AO hlist traversals 2024-12-14 20:03:53 +01:00
iucv s390/iucv: MSG_PEEK causes memory leak in iucv_sock_destruct() 2024-12-05 14:02:31 +01:00
kcm kcm: Serialise kcm_sendmsg() for the same socket. 2024-08-19 18:36:12 -07:00
key net: fill in MODULE_DESCRIPTION()s for af_key 2024-02-09 14:12:01 -08:00
l2tp net/l2tp: fix warning in l2tp_exit_net found by syzbot 2024-12-05 14:02:31 +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 llc: Improve setsockopt() handling of malformed user input 2024-12-05 14:02:35 +01:00
mac80211 wifi: mac80211: ieee80211_i: Fix memory corruption bug in struct ieee80211_chanctx 2024-10-26 00:42:49 +02:00
mac802154 Including fixes from ieee802154, bluetooth and netfilter. 2024-10-03 09:44:00 -07:00
mctp mctp: Handle error of rtnl_register_module(). 2024-10-10 15:39:35 +02:00
mpls mpls: Handle error of rtnl_register_module(). 2024-10-10 15:39:35 +02:00
mptcp mptcp: fix possible integer overflow in mptcp_reset_tout_timer 2024-12-14 20:03:55 +01:00
ncsi net/ncsi: Disable the ncsi work before freeing the associated structure 2024-10-03 10:14:14 +02:00
netfilter netfilter: nft_set_hash: skip duplicated elements pending gc run 2024-12-14 20:03:08 +01:00
netlabel netlabel: fix RCU annotation for IPv4 options on socket creation 2024-05-13 14:58:12 -07:00
netlink netlink: fix false positive warning in extack during dumps 2024-12-05 14:02:31 +01:00
netrom net/netrom: prefer strscpy over strcpy 2024-08-29 12:33:07 -07:00
nfc Quite smaller than usual. Notably it includes the fix for the unix 2024-05-23 12:49:37 -07:00
nsh nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). 2024-04-26 12:20:01 +02:00
openvswitch netdev_features: convert NETIF_F_NETNS_LOCAL to dev->netns_local 2024-09-03 11:36:43 +02:00
packet af_packet: avoid erroring out after sock_init_data() in packet_create() 2024-12-14 20:03:47 +01:00
phonet phonet: Handle error of rtnl_register_module(). 2024-10-10 15:39:36 +02:00
psample net: psample: fix flag being set in wrong skb 2024-07-11 18:11:31 -07:00
qrtr net: qrtr: Update packets cloning when broadcasting 2024-09-24 10:48:16 +02:00
rds net: rds: add option for GCOV profiling 2024-08-09 13:18:46 +01:00
rfkill net: rfkill: gpio: Add check for clk_enable() 2024-12-05 14:01:57 +01:00
rose net: change proto and proto_ops accept type 2024-05-13 18:19:09 -06:00
rxrpc rxrpc: Improve setsockopt() handling of malformed user input 2024-12-05 14:02:35 +01:00
sched net/sched: cbs: Fix integer overflow in cbs_set_port_rate() 2024-12-14 20:03:47 +01:00
sctp sctp: fix possible UAF in sctp_v6_available() 2024-11-09 09:15:04 -08:00
smc net/smc: fix LGR and link use-after-free issue 2024-12-14 20:03:05 +01:00
strparser strparser: pad sk_skb_cb to avoid straddling cachelines 2022-07-08 18:38:44 -07:00
sunrpc sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket 2024-12-05 14:03:09 +01:00
switchdev net: bridge: switchdev: Improve error message for port_obj_add/del functions 2024-05-08 12:19:12 +01:00
tipc tipc: Fix use-after-free of kernel socket in cleanup_bearer(). 2024-12-14 20:03:05 +01:00
tls move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
unix splice: do not checksum AF_UNIX sockets 2024-12-19 18:12:59 +01:00
vmw_vsock bpf, vsock: Invoke proto::close on close() 2024-12-14 20:03:14 +01:00
wireless wifi: nl80211: fix bounds checker error in nl80211_parse_sched_scan 2024-12-05 14:02:49 +01:00
x25 net: change proto and proto_ops accept type 2024-05-13 18:19:09 -06:00
xdp xsk: fix OOB map writes when deleting elements 2024-12-14 20:03:31 +01:00
xfrm ipsec-2024-10-22 2024-10-24 11:11:33 +02:00
compat.c file: stop exposing receive_fd_user() 2023-12-12 14:24:14 +01:00
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
Kconfig memory-provider: disable building dmabuf mp on !CONFIG_PAGE_POOL 2024-09-13 11:41:45 -07:00
Kconfig.debug net: make NET_(DEV|NS)_REFCNT_TRACKER depend on NET 2022-09-20 14:23:56 -07:00
Makefile af_unix: Remove CONFIG_UNIX_SCM. 2024-01-31 16:41:16 -08:00
socket.c net: explicitly clear the sk pointer, when pf->create fails 2024-10-07 16:21:59 -07:00
sysctl_net.c sysctl: Remove check for sentinel element in ctl_table arrays 2024-06-13 10:50:52 +02:00