Bug 2468145 (CVE-2026-43454) - CVE-2026-43454 kernel: netfilter: nf_tables: Fix for duplicate device in netdev hooks
Summary: CVE-2026-43454 kernel: netfilter: nf_tables: Fix for duplicate device in netd...
Keywords:
Status: NEW
Alias: CVE-2026-43454
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-08 15:01 UTC by OSIDB Bzimport
Modified: 2026-09-01 07:30 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:61887 0 None None None 2026-09-01 07:30:16 UTC

Description OSIDB Bzimport 2026-05-08 15:01:29 UTC 
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.
Comment 1 Keith Grant 2026-05-09 00:45:35 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050859-CVE-2026-43454-83f9@gregkh/T
Comment 5 errata-xmlrpc 2026-09-01 07:30:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:61887 https://access.redhat.com/errata/RHSA-2026:61887
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