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Paolo Abeni 4b5af44129 mptcp: don't leak msk in token container
If a listening MPTCP socket has unaccepted sockets at close
time, the related msks are freed via mptcp_sock_destruct(),
which in turn does not invoke the proto->destroy() method
nor the mptcp_token_destroy() function.

Due to the above, the child msk socket is not removed from
the token container, leading to later UaF.

Address the issue explicitly removing the token even in the
above error path.

Fixes: 79c0949e9a ("mptcp: Add key generation and token tree")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-10 16:07:00 -07:00
arch
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Documentation Just a small update: 2020-06-08 17:14:19 -07:00
drivers vxlan: Remove access to nexthop group struct 2020-06-10 13:20:20 -07:00
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include vxlan: Remove access to nexthop group struct 2020-06-10 13:20:20 -07:00
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net mptcp: don't leak msk in token container 2020-06-10 16:07:00 -07:00
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tools selftests/net: in rxtimestamp getopt_long needs terminating null entry 2020-06-09 14:31:33 -07:00
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