batman-adv tp_meter Session Rejection Flaw

Publication date: 2026-05-28

Last updated on: 2026-06-10

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: reject new tp_meter sessions during teardown Prevent tp_meter from starting new sender or receiver sessions after mesh_state has left BATADV_MESH_ACTIVE.

CVSS Scores

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Meta Information

Published

2026-05-28

Last Modified

2026-06-10

Generated

2026-07-08

AI Q&A

2026-05-28

EPSS Evaluated

2026-07-06

NVD

CVE-2026-46206

EUVD

EUVD-2026-32833

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	From 5.16 (inc) to 6.1.175 (exc)
linux	linux_kernel	From 5.11 (inc) to 5.15.209 (exc)
linux	linux_kernel	From 6.2 (inc) to 6.6.140 (exc)
linux	linux_kernel	From 6.13 (inc) to 6.18.32 (exc)
linux	linux_kernel	From 6.7 (inc) to 6.12.90 (exc)
linux	linux_kernel	From 6.19 (inc) to 7.0.9 (exc)
linux	linux_kernel	From 4.8 (inc) to 5.10.258 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability involves the batman-adv component of the Linux kernel. It occurs because new tp_meter sessions could be started during the teardown phase, even after the mesh_state has left the BATADV_MESH_ACTIVE state. The fix prevents tp_meter from initiating new sender or receiver sessions once the mesh network is no longer active.

Impact Analysis

If exploited, this vulnerability could allow tp_meter to start new sessions during an inappropriate state of the mesh network, potentially leading to unexpected behavior or resource misuse in the network mesh managed by batman-adv.

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