From: Xin Long <lucien.xin@gmail.com>
To: network dev <netdev@vger.kernel.org>,
tipc-discussion@lists.sourceforge.net
Cc: davem@davemloft.net, kuba@kernel.org,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>, Jon Maloy <jmaloy@redhat.com>,
Ying Xue <ying.xue@windriver.com>,
Wei Chen <harperchen1110@gmail.com>
Subject: [PATCH net 0/2] tipc: fix two race issues in tipc_conn_alloc
Date: Fri, 18 Nov 2022 16:44:59 -0500 [thread overview]
Message-ID: <cover.1668807842.git.lucien.xin@gmail.com> (raw)
The race exists beteen tipc_topsrv_accept() and tipc_conn_close(),
one is allocating the con while the other is freeing it and there
is no proper lock protecting it. Therefore, a null-pointer-defer
and a use-after-free may be triggered, see details on each patch.
Xin Long (2):
tipc: set con sock in tipc_conn_alloc
tipc: add an extra conn_get in tipc_conn_alloc
net/tipc/topsrv.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
--
2.31.1
next reply other threads:[~2022-11-18 21:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-18 21:44 Xin Long [this message]
2022-11-18 21:45 ` [PATCH net 1/2] tipc: set con sock in tipc_conn_alloc Xin Long
2022-11-18 21:45 ` [PATCH net 2/2] tipc: add an extra conn_get " Xin Long
2022-11-22 0:47 ` [PATCH net 0/2] tipc: fix two race issues " Jon Maloy
2022-11-22 5:00 ` patchwork-bot+netdevbpf
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