Description
In the Linux kernel, the following vulnerability has been resolved:

wifi: nl80211: check link is beaconing for color change

When trying to do a color change, validate that the link is
beaconing first, to avoid calling the driver with an invalid
link.
Published: 2026-10-23
Score: 4.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Possible kernel denial of service through invalid link handling
Action: Patch
AI Analysis

Impact

This issue arises when the Wi‑Fi nl80211 subsystem attempts to change a link color without first verifying that the link is actively beaconing. The missing check causes the kernel to forward an invalid link identifier to the driver, which can lead to a driver fault and a kernel panic. The consequence is a sudden system crash or reboot, resulting in a denial of service. No cryptographic keys or data are exposed, so confidentiality and integrity are unaffected, but availability is compromised.

Affected Systems

The vulnerability affects all Linux kernel builds that expose the nl80211 interface for Wi‑Fi color configuration. No specific kernel versions are listed in the advisory; any build that includes the unpatched nl80211 code is potentially impacted.

Risk and Exploitability

The exploit requires a user with the ability to send nl80211 commands, typically a privileged process or an application with appropriate NET_ADMIN rights. The EPSS score of <1% and the absence from KEV indicate that no widespread exploitation has been observed, but the local privilege requirement and the potential for a kernel crash mean the risk to a compromised host is moderate. The CVSS score of 4.4 places the vulnerability in the medium severity range, but the reliance on local privilege and the potential for a kernel crash still warrant prompt attention.

Generated by OpenCVE AI on October 29, 2026 at 13:44 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update the Linux kernel to the latest stable release that includes the fix for nl80211 color change validation.
  • Ensure that only trusted and adequately hardened applications are granted NET_ADMIN capabilities required to issue nl80211 commands.
  • Monitor system logs for occurrences of kernel panics or crashes involving the wireless subsystem and apply quick patches if new releases become available.

Generated by OpenCVE AI on October 29, 2026 at 13:44 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Thu, 29 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-628
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Fri, 23 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux linux
Vendors & Products Linux linux

Fri, 23 Oct 2026 15:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-398
CWE-704

Fri, 23 Oct 2026 12:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: check link is beaconing for color change When trying to do a color change, validate that the link is beaconing first, to avoid calling the driver with an invalid link.
Title wifi: nl80211: check link is beaconing for color change
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-10-26T06:56:47.686Z

Reserved: 2026-09-25T10:25:14.380Z

Link: CVE-2026-98916

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-23T12:18:25.797

Modified: 2026-10-26T07:17:17.513

Link: CVE-2026-98916

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-23T00:00:00Z

Links: CVE-2026-98916 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T13:45:17Z

Weaknesses
  • CWE-398
  • CWE-628

    Function Call with Incorrectly Specified Arguments

  • CWE-704

    Incorrect Type Conversion or Cast