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linux/net/core
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Eric Dumazet 165573e41f tcp: secure_seq: add back ports to TS offset 
This reverts 28ee1b746f ("secure_seq: downgrade to per-host timestamp offsets")

tcp_tw_recycle went away in 2017.

Zhouyan Deng reported off-path TCP source port leakage via
SYN cookie side-channel that can be fixed in multiple ways.

One of them is to bring back TCP ports in TS offset randomization.

As a bonus, we perform a single siphash() computation
to provide both an ISN and a TS offset.

Fixes: 28ee1b746f ("secure_seq: downgrade to per-host timestamp offsets")
Reported-by: Zhouyan Deng <dengzhouyan_nwpu@163.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Acked-by: Florian Westphal <fw@strlen.de>
Link: https://patch.msgid.link/20260302205527.1982836-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-04 17:44:35 -08:00
..
bpf_sk_storage.c Convert 'alloc_flex' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
datagram.c net: datagram: introduce datagram_poll_queue for custom receive queues 2025-10-23 15:46:04 +02:00
dev.c net: Fix rcu_tasks stall in threaded busypoll 2026-03-03 13:44:28 +01:00
dev.h net: add queue config validation callback 2026-01-23 11:49:02 -08:00
dev_addr_lists.c net: s/dev_pre_changeaddr_notify/netif_pre_changeaddr_notify/ 2025-07-18 17:27:47 -07:00
dev_addr_lists_test.c net: dev_addr_lists: move locking out of init/exit in kunit 2024-04-15 10:26:35 +01:00
dev_api.c net: define an enum for the napi threaded state 2025-07-24 18:34:55 -07:00
dev_ioctl.c net: remove legacy way to get/set HW timestamp config 2026-01-20 18:21:27 -08:00
devmem.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
devmem.h net: inline net_is_devmem_iov() 2026-01-25 13:18:53 -08:00
drop_monitor.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
dst.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
dst_cache.c net: dst: annotate data-races around dst->obsolete 2025-07-02 14:32:29 -07:00
failover.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
fib_notifier.c net: do not acquire rtnl in fib_seq_sum() 2024-10-11 15:35:05 -07:00
fib_rules.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-04-17 12:26:50 -07:00
filter.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
flow_dissector.c net: remove '__' from __skb_flow_get_ports() 2025-02-24 14:27:53 -08:00
flow_offload.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
gen_estimator.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
gen_stats.c net: Remove the obsolte u64_stats_fetch_*_irq() users (net). 2022-10-28 20:13:54 -07:00
gro.c net/ipv6: Drop HBH for BIG TCP on RX side 2026-02-06 20:50:12 -08:00
gro_cells.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
gso.c net: introduce struct net_hotdata 2024-03-07 21:12:41 -08:00
hotdata.c net: add net.core.qdisc_max_burst 2026-01-13 10:12:11 +01:00
hwbm.c
ieee8021q_helpers.c net: ieee8021q: fix insufficient table-size assertion 2025-07-01 12:55:49 +02:00
link_watch.c linkwatch: use __dev_put() in callers to prevent UAF 2026-02-02 16:59:18 -08:00
lock_debug.c netdev: fix the locking for netdev notifications 2025-04-17 18:55:14 -07:00
lwt_bpf.c ipv4: Convert ->flowi4_tos to dscp_t. 2025-08-26 17:34:31 -07:00
lwtunnel.c inet: Remove rtnl_is_held arg of lwtunnel_valid_encap_type(_attr)?(). 2025-05-20 19:18:24 -07:00
Makefile net: get rid of net/core/request_sock.c 2026-02-05 09:23:05 -08:00
mp_dmabuf_devmem.h memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
neighbour.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
net-procfs.c net: add proper RCU protection to /proc/net/ptype 2026-02-03 19:20:30 -08:00
net-sysfs.c net: Keep ignoring isolated cpuset change 2026-02-03 15:23:33 +01:00
net-sysfs.h net: remove RTNL use for /proc/sys/net/core/rps_default_mask 2025-07-07 18:42:12 -07:00
net-traces.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
net_namespace.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
net_test.c pfcp: always set pfcp metadata 2024-04-01 10:49:28 +01:00
netclassid_cgroup.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
netdev-genl-gen.c Revert "Merge branch 'netkit-support-for-io_uring-zero-copy-and-af_xdp'" 2026-01-20 18:06:01 -08:00
netdev-genl-gen.h Revert "Merge branch 'netkit-support-for-io_uring-zero-copy-and-af_xdp'" 2026-01-20 18:06:01 -08:00
netdev-genl.c Revert "Merge branch 'netkit-support-for-io_uring-zero-copy-and-af_xdp'" 2026-01-20 18:06:01 -08:00
netdev_config.c net: add queue config validation callback 2026-01-23 11:49:02 -08:00
netdev_queues.c Revert "Merge branch 'netkit-support-for-io_uring-zero-copy-and-af_xdp'" 2026-01-20 18:06:01 -08:00
netdev_rx_queue.c net: add queue config validation callback 2026-01-23 11:49:02 -08:00
netevent.c
netmem_priv.h netmem: replace __netmem_clear_lsb() with netmem_to_nmdesc() 2025-10-14 13:37:26 +02:00
netpoll.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
netprio_cgroup.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
of_net.c net: Explicitly include correct DT includes 2023-07-27 20:33:16 -07:00
page_pool.c net: page_pool: sanitise allocation order 2025-12-02 11:08:39 -08:00
page_pool_priv.h net: page_pool: don't try to stash the napi id 2025-01-27 14:37:41 -08:00
page_pool_user.c net: use napi_id_valid helper 2025-02-17 16:43:04 -08:00
pktgen.c kernel.h: drop hex.h and update all hex.h users 2026-01-20 19:44:19 -08:00
ptp_classifier.c
rtnetlink.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
scm.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
secure_seq.c tcp: secure_seq: add back ports to TS offset 2026-03-04 17:44:35 -08:00
selftests.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
skb_fault_injection.c net: Implement fault injection forcing skb reallocation 2024-11-12 12:05:33 +01:00
skbuff.c net: Drop the lock in skb_may_tx_timestamp() 2026-02-24 11:27:29 +01:00
skmsg.c net: annotate data-races around sk->sk_{data_ready,write_space} 2026-02-26 19:23:03 -08:00
sock.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
sock_destructor.h
sock_diag.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
sock_map.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
sock_reuseport.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
stream.c net: stream: add description for sk_stream_write_space() 2025-07-18 16:57:21 -07:00
sysctl_net_core.c net: include <linux/hex.h> from sysctl_net_core.c 2026-01-26 16:35:53 -08:00
timestamping.c net: Add the possibility to support a selected hwtstamp in netdevice 2024-12-16 12:51:40 +00:00
tso.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
utils.c kernel.h: drop hex.h and update all hex.h users 2026-01-20 19:44:19 -08:00
xdp.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00