SB20261015122 - Improper Check for Unusual or Exceptional Conditions in Linux kernel mac80211

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Main Vulnerability Database SB20261015122

SB20261015122 - Improper Check for Unusual or Exceptional Conditions in Linux kernel mac80211

Published: October 15, 2026

Security Bulletin ID SB20261015122
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 Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-98406)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

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 trigger a kernel warning.

The vulnerability exists due to insufficient validation of the interface's driver-presence state in ieee80211_set_bitrate_mask() when handling wireless bitrate-setting requests. A local user can issue a SIOCSIWRATE ioctl for an interface marked as running but absent from the driver to trigger a kernel warning.

The affected state can occur during interface teardown or during bringup before the interface is added to the driver.


Remediation

Install update from vendor's website.

References