SB20261015150 - Improper input validation in Linux kernel mac80211

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Main Vulnerability Database SB20261015150

SB20261015150 - Improper input validation in Linux kernel mac80211

Published: October 15, 2026

Security Bulletin ID SB20261015150
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper input validation (CVE-ID: CVE-2026-98336)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause unsupported traffic control setup on purely virtual interfaces to be passed to drivers.

The vulnerability exists due to insufficient validation of interface types in ieee80211_netdev_setup_tc() in mac80211 when configuring traffic control offloading on AP_VLAN interfaces. A local user can request traffic control offloading on an AP_VLAN interface to cause unsupported traffic control setup on purely virtual interfaces to be passed to drivers.


Remediation

Install update from vendor's website.

References