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PUBLISHED

CVE-2024-26708

mptcp: really cope with fastopen race

Reserved:2024-02-19
Published:2024-04-03
Updated:2024-04-04

Description

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.

Product status

Default status
unaffected

1e777f39b4d7 before 4bfe217e075d
affected

1e777f39b4d7 before e158fb9679d1
affected

1e777f39b4d7 before 337cebbd850f
affected

Default status
affected

6.2
affected

Any version before 6.2
unaffected

6.6.18
unaffected

6.7.6
unaffected

6.8
unaffected

References

https://git.kernel.org/stable/c/4bfe217e075d04e63c092df9d40c608e598c2ef2

https://git.kernel.org/stable/c/e158fb9679d15a2317ec13b4f6301bd26265df2f

https://git.kernel.org/stable/c/337cebbd850f94147cee05252778f8f78b8c337f

cve.org CVE-2024-26708

nvd.nist.gov CVE-2024-26708

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