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Change History

In the Linux kernel, the following vulnerability has been resolved:

mptcp: really cope with fastopen race

Fastopen and PM-trigger subflow shutdown can race, as reported by
syzkaller.

In my first attempt to close such race, I missed the fact that
the subflow status can change again before the subflow_state_change
callback is invoked.

Address the issue additionally copying with all the states directly
reachable from TCP_FIN_WAIT1.

kernel.org https://git.kernel.org/stable/c/337cebbd850f94147cee05252778f8f78b8c337f [No types assigned]

kernel.org https://git.kernel.org/stable/c/4bfe217e075d04e63c092df9d40c608e598c2ef2 [No types assigned]

kernel.org https://git.kernel.org/stable/c/e158fb9679d15a2317ec13b4f6301bd26265df2f [No types assigned]