SB20261022305 - Improper initialization in Linux kernel mac80211

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Main Vulnerability Database SB20261022305

SB20261022305 - Improper initialization in Linux kernel mac80211

Published: October 22, 2026

Security Bulletin ID SB20261022305
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper initialization (CVE-ID: CVE-2026-98700)

CWE-ID: CWE-665 - Improper Initialization

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to potentially disrupt wireless communication through incorrect transmit-rate selection.

The vulnerability exists due to improper initialization of transmit band metadata in the mac80211 ieee80211_8023_xmit() function when processing 802.3 encapsulation offload frames on non-MLD interfaces. A local user can trigger transmission of affected frames to cause transmit-rate selection using an incorrect frequency band, potentially disrupting wireless communication.


Remediation

Install update from vendor's website.

References