CVE-2026-23169
HighSummary
W jądrze systemu Linux naprawiono podatność związaną z wyścigiem w funkcji mptcp_pm_nl_flush_addrs_doit(). Problemy zgłoszone przez syzbot i Eulgyu Kim dotyczyły awarii w funkcjach mptcp_pm_nl_get_local_id() oraz mptcp_pm_nl_is_backup().
Risk Assessment
Podatność ta może prowadzić do awarii systemu, co wpływa na stabilność i dostępność usług opartych na protokole MPTCP w systemie Linux.
Recommendation
Zaleca się aktualizację jądra systemu Linux do najnowszej wersji, aby usunąć tę podatność i poprawić stabilność systemu.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race in mptcp_pm_nl_flush_addrs_doit() syzbot and Eulgyu Kim reported crashes in mptcp_pm_nl_get_local_id() and/or mptcp_pm_nl_is_backup() Root cause is list_splice_init() in mptcp_pm_nl_flush_addrs_doit() which is not RCU ready. list_splice_init_rcu() can not be called here while holding pernet->lock spinlock. Many thanks to Eulgyu Kim for providing a repro and testing our patches.