CVE-2026-43454: netfilter: nf_tables: Fix for duplicate device in netdev hooks
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nftables: Fix for duplicate device in netdev hooks
When handling NETDEVREGISTER notification, duplicate device registration must be avoided since the device may have been added by nftnetdevhookalloc() already when creating the hook.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-43454?
The severity of CVE-2026-43454 is considered moderate, as it relates to the handling of device registrations in the Linux kernel.
How do I fix CVE-2026-43454?
To fix CVE-2026-43454, update your Linux kernel to the latest version that contains the patch for this vulnerability.
What does CVE-2026-43454 affect?
CVE-2026-43454 affects the Linux kernel, specifically the netfilter component handling NETDEV_REGISTER notifications.
What are the potential consequences of CVE-2026-43454?
The potential consequences of CVE-2026-43454 include issues with network device registration that may lead to instability in network operations.
Is CVE-2026-43454 actively exploited?
As of now, there are no reported active exploits specifically targeting CVE-2026-43454.