SB20260720127 - Improper resource shutdown or release in Linux kernel batman-adv

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Main Vulnerability Database SB20260720127

SB20260720127 - Improper resource shutdown or release in Linux kernel batman-adv

Published: July 20, 2026

Security Bulletin ID SB20260720127
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper resource shutdown or release (CVE-ID: CVE-2026-64092)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource shutdown handling in the batman-adv tp_meter receiver shutdown logic when stopping receiver sessions and handling timer expiration. A local user can trigger the affected code path to cause a denial of service.

The issue arises from a reference leak involving tp_vars during coordination between batadv_tp_receiver_shutdown() and batadv_tp_stop_all().


Remediation

Install update from vendor's website.

References