High 7.8Published Aug 15, 2026

CVE-2026-72232batman-adv: ensure minimal ethernet header on TX

Updated under an hour ago (Oct 29, 2026, 1:50 PM ET)

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No exploitation reported and no EPSS estimate yet.

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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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 58799078afebd5115e052bf69ad6697f9759dd6f; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 38cd10b0aeec755d89f78722a2b83f4088ff0cb0; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 811fea37620f2097955d95ce81cfdba03fd30f1b; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before e6640923afee619d9fa82b07394dc9498e202304; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 6b4f521e01257387906f8b969ad3450d8208d4e2; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 9e16b6751a8206de0b865d99bb02771e6751d12d; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before dbeb4145d9778f922f459935da9a027750765a69; from c6c8fea29769d998d94fcec9b9f14d4b52b349d3 before 49df66b7993c80b80c7eb9a84ba5b3410c8296a0	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.