From: Kuniyuki Iwashima <kuniyu@google.com>
To: "David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>,
Neal Cardwell <ncardwell@google.com>,
Willem de Bruijn <willemb@google.com>,
David Ahern <dsahern@kernel.org>,
Ido Schimmel <idosch@nvidia.com>
Cc: Simon Horman <horms@kernel.org>,
Kuniyuki Iwashima <kuniyu@google.com>,
Kuniyuki Iwashima <kuni1840@gmail.com>,
netdev@vger.kernel.org
Subject: [PATCH v1 net-next 0/2] net: Disallow buggy TCP transitions and IPV6_ADDRFORM.
Date: Fri, 4 Sep 2026 03:35:27 +0000 [thread overview]
Message-ID: <20260904033543.2635540-1-kuniyu@google.com> (raw)
The following operations have recently received a lot of AI-driven
bug reports:
* listen() + shutdown() + connect()
* connect() + connect(AF_UNSPEC) + listen()
* setsockopt(IPV6_ADDRFORM)
They are not worth fixing by churning the fast path, so this series
disallows the transitions and removes IPV6_ADDRFORM.
https://lore.kernel.org/netdev/CANn89i+px52TtJy3S9=uHxGj3s-WueguRo1Z_4FxO=02KLmwmQ@mail.gmail.com/
https://lore.kernel.org/netdev/5832ba17-c096-4f07-aa73-2e2bb6f79856@redhat.com/
I did not add Fixes tags, but if we want to backport, the tag
would be:
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Kuniyuki Iwashima (2):
tcp: Do not allow buggy transitions between ehash and lhash2.
ipv6: Remove IPV6_ADDRFORM.
include/linux/net.h | 2 +-
include/net/inet_connection_sock.h | 1 +
net/core/sock.c | 4 +-
net/ipv4/af_inet.c | 3 --
net/ipv4/inet_connection_sock.c | 1 +
net/ipv4/inet_hashtables.c | 11 ++++
net/ipv6/af_inet6.c | 4 --
net/ipv6/ipv6_sockglue.c | 87 ------------------------------
8 files changed, 15 insertions(+), 98 deletions(-)
--
2.55.0.1003.g10538fe699-goog
next reply other threads:[~2026-09-04 3:36 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-04 3:35 Kuniyuki Iwashima [this message]
2026-09-04 3:35 ` [PATCH v1 net-next 1/2] tcp: Do not allow buggy transitions between ehash and lhash2 Kuniyuki Iwashima
2026-09-04 11:32 ` Jakub Sitnicki
2026-09-07 4:19 ` netdev-bot+sashiko
2026-09-04 3:35 ` [PATCH v1 net-next 2/2] ipv6: Remove IPV6_ADDRFORM Kuniyuki Iwashima
2026-09-04 9:10 ` Paolo Abeni
2026-09-07 4:19 ` netdev-bot+sashiko
2026-09-08 9:21 ` David Laight
2026-09-08 1:00 ` [PATCH v1 net-next 0/2] net: Disallow buggy TCP transitions and IPV6_ADDRFORM patchwork-bot+netdevbpf
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