Eric Dumazet 9ca48d616e tcp: do not accept packets beyond window
Currently, TCP accepts incoming packets which might go beyond the
offered RWIN.

Add to tcp_sequence() the validation of packet end sequence.

Add the corresponding check in the fast path.

We relax this new constraint if the receive queue is empty,
to not freeze flows from buggy peers.

Add a new drop reason : SKB_DROP_REASON_TCP_INVALID_END_SEQUENCE.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250711114006.480026-2-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-14 18:41:15 -07:00
2025-07-01 09:49:18 +02:00
2022-09-28 09:02:20 +02:00
2025-06-21 07:34:28 -07:00
2025-02-19 14:53:27 -07:00
2025-07-06 14:10:26 -07:00
2024-03-18 03:36:32 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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