CVE-2026-43454: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: from 6.16, before 6.18.19 (fixed in 6.18.19); from 6.19, before 6.19.9 (fixed in 6.19.9); version 7.0 only

Published 2026-05-08. Last modified 2026-06-17.