CVE-2026-43454 HIGH

CVE-2026-43454: netfilter: nf_tables: Fix for duplicate device in netdev hooks

Vendor Linux
Product Linux
Published May 8, 2026
Last update May 11, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix for duplicate device in netdev hooks When handling NETDEV_REGISTER notification, duplicate device registration must be avoided since the device may have been added by nft_netdev_hook_alloc() already when creating the hook.

Key dates

02Disclosure timeline

May 8, 2026 CVE published
May 11, 2026 Record updated