Answer in brief
CVE-2026-43454 records a Unknown severity vulnerability in netfilter: nf_tables: Fix for duplicate device in netdev hooks. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a331b78a552551d0e404e58e6390b1c828d6af8f <6d2a95c6890577cc3eab2b20018e16850d7fb094 || >=a331b78a552551d0e404e58e6390b1c828d6af8f <2041cdb078041611510fc189410bc70b29f688fb || >=a331b78a552551d0e404e58e6390b1c828d6af8f <b7cdc5a97d02c943f4bdde4d5767ad0c13cad92b | 6d2a95c6890577cc3eab2b20018e16850d7fb094, 2041cdb078041611510fc189410bc70b29f688fb, b7cdc5a97d02c943f4bdde4d5767ad0c13cad92b |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
May 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-43454 records a Unknown severity vulnerability in netfilter: nf_tables: Fix for duplicate device in netdev hooks. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a331b78a552551d0e404e58e6390b1c828d6af8f <6d2a95c6890577cc3eab2b20018e16850d7fb094 || >=a331b78a552551d0e404e58e6390b1c828d6af8f <2041cdb078041611510fc189410bc70b29f688fb || >=a331b78a552551d0e404e58e6390b1c828d6af8f <b7cdc5a97d02c943f4bdde4d5767ad0c13cad92b | 6d2a95c6890577cc3eab2b20018e16850d7fb094, 2041cdb078041611510fc189410bc70b29f688fb, b7cdc5a97d02c943f4bdde4d5767ad0c13cad92b |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
May 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 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.
Quoted source text, attributed separately from HOL analysis.