CVE-2026-90154

Summary

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

ksmbd: scope session state changes to bound connections

ksmbd_all_conn_set_status() treats every connection whose transient binding flag is set as belonging to the target SessionId. A logoff or session replacement can consequently move an unrelated connection to NEED_RECONNECT or NEED_SETUP.

Pass the target session itself and select connections using either the connection-local session xarray or the session's permanent channel list. Use the same association test while waiting for requests to drain.

Serialize session-wide status changes under request_lock and do not overwrite EXITING or RELEASING. Protect the shutdown transition with the same lock so a concurrent session update cannot revive a closing connection.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxf5a544e3bab78142207e0242d22442db85ba1eff < 0875872718b98e8530fbc634e5aa7dbd3253b80daffected
LinuxLinuxf5a544e3bab78142207e0242d22442db85ba1eff < c50e628122aed077695669e25b842e778511a43daffected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References