CVE-2026-63998

Medium

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().

Package Linux Kernel
Published 2026-07-19
Last modified 2026-10-13
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 6.11 and later are affected. Fixed in 6.18.35, 7.0.12, 7.1 and their respective stable series.

Affected from
≥ 6.11
Fixed in
✓ 6.18.35 6.18.x ✓ 7.0.12 7.0.x ✓ 7.1

References

3 total

Frequently asked questions

  • What is CVE-2026-63998?

    CVE-2026-63998 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.11 onward and has been patched in 6.18.35, 7.0.12 and 7.1. CVE-2026-63998 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2026-63998?

    CVE-2026-63998 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2026-63998?

    Yes. CVE-2026-63998 has been patched. Fixed versions include 6.18.35, 7.0.12 and 7.1. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-63998 actively exploited?

    No. CVE-2026-63998 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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