SB2026100745 - Missing Release of Resource after Effective Lifetime in Linux kernel mac80211

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Main Vulnerability Database SB2026100745

SB2026100745 - Missing Release of Resource after Effective Lifetime in Linux kernel mac80211

Published: October 7, 2026

Security Bulletin ID SB2026100745
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-98326)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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 failure to release an acquired channel context in ieee80211_join_mesh() when mesh startup fails. A local user can trigger a mesh startup failure followed by interface removal to trigger a kernel warning.

During interface removal, the channel context is unassigned after the interface has already been removed from the driver.


Remediation

Install update from vendor's website.

References