Vulnerability in Linux

CVE-2026-43454

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (6.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-43454: held from 0.001 to 0.002.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001

Affected products

  • Linux — versions a331b78a552551d0e404e58e6390b1c828d6af8f, 6.16, 0
  • Linux Kernel — versions 7.0

References

Frequently asked questions

What is CVE-2026-43454?
CVE-2026-43454 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-05-08.
How severe is CVE-2026-43454?
High severity. CVSS v3 base score is 7.8 out of 10.