CVE-2025-22040
HighSummary
W jądrze Linuxa naprawiono podatność związaną z użyciem po zwolnieniu sesji w połączeniu wielokanałowym. Występowała warunkowość wyścigu między konfiguracją sesji a deregistracją sesji ksmbd, co mogło prowadzić do zwolnienia sesji przed dodaniem połączenia do listy kanałów sesji.
Risk Assessment
Organizacja może być narażona na ataki, które wykorzystują tę podatność, co może prowadzić do nieautoryzowanego dostępu lub destabilizacji systemu. W przypadku wykorzystania tej luki, atakujący może uzyskać kontrolę nad sesjami użytkowników.
Recommendation
Zaleca się aktualizację jądra Linuxa do najnowszej wersji, aby załatać tę podatność. Należy również monitorować systemy pod kątem nieautoryzowanych działań związanych z sesjami.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and ksmbd_sessions_deregister. The session can be freed before the connection is added to channel list of session. This patch check reference count of session before freeing it.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

