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CVE-2026-43454

netfilter: nf_tables: Fix for duplicate device in netdev hooks

HIGH
7.8
CVSS Score
Published: May 8, 2026 at 02:22 PM UTC
Updated: August 5, 2026 at 01:24 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.16 ≤ v < 6.18.196.16 ≤ v < 6.19.96.16 ≤ v < 7.06.19 ≤ v < 6.19.96.167.0 rc17.0 rc27.0 rc3a331b78a552551d0e404e58e6390b1c828d6af8f
Vendor states this is fixed in 2041cdb078041611510fc189410bc70b29f688fb (fixed)
Vendor states this is fixed in 6d2a95c6890577cc3eab2b20018e16850d7fb094 (fixed)
Vendor states this is fixed in b7cdc5a97d02c943f4bdde4d5767ad0c13cad92b (fixed)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.18.19 (unaffected)
Vendor states this is fixed in 6.19.9 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

References (3)

Patch
Source: cverecord
https://git.kernel.org/stable/c/6d2a95c6890577cc3eab2b20018e16850d7fb094
Patch
Source: cverecord
https://git.kernel.org/stable/c/2041cdb078041611510fc189410bc70b29f688fb
Patch
Source: cverecord
https://git.kernel.org/stable/c/b7cdc5a97d02c943f4bdde4d5767ad0c13cad92b

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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