High 7.8Published May 8, 2026

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

Updated under an hour ago (Oct 28, 2026, 12:30 PM ET)

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Exploited in the last 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.

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: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from a331b78a552551d0e404e58e6390b1c828d6af8f before 6d2a95c6890577cc3eab2b20018e16850d7fb094; from a331b78a552551d0e404e58e6390b1c828d6af8f before 2041cdb078041611510fc189410bc70b29f688fb; from a331b78a552551d0e404e58e6390b1c828d6af8f before b7cdc5a97d02c943f4bdde4d5767ad0c13cad92b	CNA record
linux linux_kernel linux:linux_kernel	from 6.16 before 6.18.19; from 6.19 before 6.19.9; 7.0; 7.0; 7.0	NVD

References

References

https://git.kernel.org/stable/c/6d2a95c6890577cc3eab2b20018e16850d7fb094	patch
https://git.kernel.org/stable/c/2041cdb078041611510fc189410bc70b29f688fb	patch
https://git.kernel.org/stable/c/b7cdc5a97d02c943f4bdde4d5767ad0c13cad92b	patch

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.