CVE-2026-90154

ksmbd: scope session state changes to bound connections

CVE-2026-90154 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-90154, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.1
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0021
10th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 13.5 (trixie) 6.12.115-2 DEBIAN-CVE-2026-90154 Sep 23, 2026
linux · Debian 14 7.2.6-1 DEBIAN-CVE-2026-90154 Sep 23, 2026

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