CVE-2026-72416
netfilter: nft_compat: ebtables emulation must reject non-bridge targets
- State
- Published
- Severity
- 7.3 High
- Published
- Aug 15, 2026
- Updated
- Oct 30, 2026
- Reserved
- Aug 9, 2026
Description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_compat: ebtables emulation must reject non-bridge targets
xtables targets return netfilter verdicts: NF_ACCEPT, NF_DROP, and so on. ebtables targets return incompatible verdicts: EBT_ACCEPT, EBT_DROP, ... We cannot allow fallback to NFPROTO_UNSPEC.
ebtables doesn't permit this since 11ff7288beb2 ("netfilter: ebtables: reject non-bridge targets") but that commit missed the nft_compat layer.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.3 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H | Linux |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
LinuxLinux |
|
LinuxLinux |
|
References
- https://git.kernel.org/stable/c/7c4f6a55a0fa8efbbe06dfed3fd440bca121f41a
- https://git.kernel.org/stable/c/efc17b9240d821c424bc5191a5c6e9384a06293e
- https://git.kernel.org/stable/c/b3f7a84540a0d014ec42343ff5909657c1bd1994
- https://git.kernel.org/stable/c/33e1875d6b5b552a2e5652b40074c604199354ee
- https://git.kernel.org/stable/c/c129b0185e707dce405968e21afccd5728b2ce63
- https://git.kernel.org/stable/c/9dbba7e694ec045f21ede2f892fb42b81b4e1692
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