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CVE-2026-46206: batman-adv: reject new tp_meter sessions during teardown

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-28 · updated 2026-06-17

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.

Affected products

• Linux kernel: from 4.8 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.90; from 6.13 before 6.18.32 — fixed in 5.10.258, 5.15.209, 6.1.175, 6.12.90, 6.18.32, 6.6.140

How to fix

Upgrade to a fixed version: Linux kernel 5.10.258, 5.15.209, 6.1.175, 6.12.90. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0a7a840074c9ca5ebffc9c52358c8ea55828ec71
• https://git.kernel.org/stable/c/3243543592425beec83d453793e9d27caa0d8e66
• https://git.kernel.org/stable/c/52e6ec3e972cf27792cc1559874dbee19f286869
• https://git.kernel.org/stable/c/ca39545cf07c142b39d474a1439a046bf28def3d
• https://git.kernel.org/stable/c/dcff44644bb518598b1a6be722706d6174b2f6a1
• https://git.kernel.org/stable/c/e1e2194cc725ec1d41f9412496212f0fa0519c36
• https://git.kernel.org/stable/c/e4a3c4a4c8f6efd243c3e448c05b7bebcbf7b3b6
• https://git.kernel.org/stable/c/ff93f86ecbb50a4709c403fc279a396e308edde5

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