SB20260720145 - Always-Incorrect Control Flow Implementation in Linux kernel batman-adv

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Main Vulnerability Database SB20260720145

SB20260720145 - Always-Incorrect Control Flow Implementation in Linux kernel batman-adv

Published: July 20, 2026

Security Bulletin ID SB20260720145
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Always-Incorrect Control Flow Implementation (CVE-ID: CVE-2026-64090)

CWE-ID: CWE-670 - Always-Incorrect Control Flow Implementation

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper handling of empty vlan responses in batman-adv translation table handling when processing indirect translation table replies from the global tt state. A remote attacker can trigger indirect translation table responses containing empty vlan data to cause a denial of service.

The issue affects replies generated indirectly by another node using the global tt state rather than only direct local translation table responses.


Remediation

Install update from vendor's website.

References