CVE-2026-72232

In the Linux kernel, the following vulnerability has been resolved: batman-adv: ensure minimal ethernet header on TX As documented in commit 8bd67ebb50c0 ("net: bridge: xmit: make sure we have at least eth header len bytes"), it is possible by for a local user with eBPF TC hook access to attach a tc filter which truncates the packet and redirects to an batadv interface. But the code assumes that at least ETH_HLEN bytes are available and thus might read outside of the available buffer. The batadv_interface_tx() must therefore always check itself if enough data is available for the ethernet header and don't rely on min_header_len.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/38cd10b0aeec755d89f78722a2b83f4088ff0cb0
https://git.kernel.org/stable/c/49df66b7993c80b80c7eb9a84ba5b3410c8296a0
https://git.kernel.org/stable/c/58799078afebd5115e052bf69ad6697f9759dd6f
https://git.kernel.org/stable/c/6b4f521e01257387906f8b969ad3450d8208d4e2
https://git.kernel.org/stable/c/811fea37620f2097955d95ce81cfdba03fd30f1b
https://git.kernel.org/stable/c/9e16b6751a8206de0b865d99bb02771e6751d12d
https://git.kernel.org/stable/c/dbeb4145d9778f922f459935da9a027750765a69
https://git.kernel.org/stable/c/e6640923afee619d9fa82b07394dc9498e202304

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:21

Updated : 2026-08-17 06:18

NVD link : CVE-2026-72232

Mitre link : CVE-2026-72232

CVE.ORG link : CVE-2026-72232

JSON object : View

Products Affected

No product.

CWE

No CWE.

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But the code assumes that at least\nETH_HLEN bytes are available and thus might read outside of the available\nbuffer.\n\nThe batadv_interface_tx() must therefore always check itself if enough data\nis available for the ethernet header and don't rely on min_header_len."}], "lastModified": "2026-08-17T06:18:24.530", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}