NetSight
medium5.5

CVE-2024-26708

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…

Impact

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.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 6.2 before 6.6.18
from 6.7 before 6.7.6
Version 6.8

Weakness classification

References