Files
linux/include/net
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
..
2025-11-03 16:49:53 +09:00
2024-10-08 15:33:49 -07:00
2025-04-24 17:03:45 -07:00
2025-07-08 18:05:25 -07:00
2022-08-09 22:14:02 -07:00
2024-05-08 10:35:09 +01:00
2024-08-26 09:37:23 -07:00
2024-11-13 18:49:50 -08:00
2024-08-26 09:37:23 -07:00
2025-08-26 17:34:31 -07:00
2025-09-03 15:16:49 -07:00
2026-01-21 19:28:32 -08:00
2024-05-07 01:35:55 +02:00
2026-01-13 10:12:11 +01:00
2024-08-26 09:37:23 -07:00
2024-12-06 17:43:08 -08:00
2021-10-13 09:40:46 -07:00
2024-08-26 09:37:23 -07:00
2025-04-15 08:21:46 -07:00
2023-07-14 20:39:30 -07:00
2025-09-18 12:32:06 +02:00
2024-08-26 09:37:23 -07:00
2024-08-26 09:37:23 -07:00
2025-09-03 15:08:20 -07:00
2025-04-11 18:58:10 -07:00
2025-07-04 09:32:35 +02:00
2024-05-30 18:29:38 -07:00
2025-09-08 18:06:21 -07:00
2023-10-04 11:49:20 -07:00
2025-07-11 11:00:57 -07:00
2023-07-28 14:07:59 -07:00
2022-12-12 15:04:39 -08:00
2023-09-14 16:16:36 +02:00
2026-02-10 20:21:48 -08:00