netdev - [PATCH net-next 0/8] tcp: receiver changes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250711114006.480026-1-edumazet@google.com>
Date: Fri, 11 Jul 2025 11:39:58 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, Neal Cardwell <ncardwell@...gle.com>
Cc: Simon Horman <horms@...nel.org>, Kuniyuki Iwashima <kuniyu@...gle.com>, 
	Willem de Bruijn <willemb@...gle.com>, netdev@...r.kernel.org, eric.dumazet@...il.com, 
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 0/8] tcp: receiver changes

Before accepting an incoming packet:

- Make sure to not accept a packet beyond advertized RWIN.
  If not, increment a new SNMP counter (LINUX_MIB_BEYOND_WINDOW)

- ooo packets should update rcv_mss and tp->scaling_ratio.

- Make sure to not accept packet beyond sk_rcvbuf limit.

This series includes three associated packetdrill tests.

Eric Dumazet (8):
  tcp: do not accept packets beyond window
  tcp: add LINUX_MIB_BEYOND_WINDOW
  selftests/net: packetdrill: add tcp_rcv_big_endseq.pkt
  tcp: call tcp_measure_rcv_mss() for ooo packets
  selftests/net: packetdrill: add tcp_ooo_rcv_mss.pkt
  tcp: add const to tcp_try_rmem_schedule() and sk_rmem_schedule() skb
  tcp: stronger sk_rcvbuf checks
  selftests/net: packetdrill: add tcp_rcv_toobig.pkt

 .../networking/net_cachelines/snmp.rst        |  1 +
 include/net/dropreason-core.h                 |  9 +++-
 include/net/sock.h                            |  2 +-
 include/uapi/linux/snmp.h                     |  1 +
 net/ipv4/proc.c                               |  1 +
 net/ipv4/tcp_input.c                          | 48 ++++++++++++++-----
 .../net/packetdrill/tcp_ooo_rcv_mss.pkt       | 27 +++++++++++
 .../net/packetdrill/tcp_rcv_big_endseq.pkt    | 44 +++++++++++++++++
 .../net/packetdrill/tcp_rcv_toobig.pkt        | 33 +++++++++++++
 9 files changed, 152 insertions(+), 14 deletions(-)
 create mode 100644 tools/testing/selftests/net/packetdrill/tcp_ooo_rcv_mss.pkt
 create mode 100644 tools/testing/selftests/net/packetdrill/tcp_rcv_big_endseq.pkt
 create mode 100644 tools/testing/selftests/net/packetdrill/tcp_rcv_toobig.pkt

-- 
2.50.0.727.gbf7dc18ff4-goog