CVE-2026-43454 PUBLISHED

netfilter: nf_tables: Fix for duplicate device in netdev hooks

Assigner: Linux
Reserved: 01.05.2026 Published: 08.05.2026 Updated: 08.05.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from a331b78a552551d0e404e58e6390b1c828d6af8f to 6d2a95c6890577cc3eab2b20018e16850d7fb094 (excl.)
  • affected from a331b78a552551d0e404e58e6390b1c828d6af8f to 2041cdb078041611510fc189410bc70b29f688fb (excl.)
  • affected from a331b78a552551d0e404e58e6390b1c828d6af8f to b7cdc5a97d02c943f4bdde4d5767ad0c13cad92b (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.16 is affected
  • unaffected from 0 to 6.16 (excl.)
  • unaffected from 6.18.19 to 6.18.* (incl.)
  • unaffected from 6.19.9 to 6.19.* (incl.)
  • unaffected from 7.0 to * (incl.)

References