Answer in brief
CVE-2026-90061 records a Unknown severity vulnerability in netfilter: nf_tables: skip double clone set expressions on element insert. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic) and additional mapped packages. 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), Linux/Linux (generic), Linux/Linux (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <1e7fb6801d9cc826adcdb7fa0533c397730657f2 || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <43559058d21e0493aa220ac167e0279334dea5f9 | 1e7fb6801d9cc826adcdb7fa0533c397730657f2, 43559058d21e0493aa220ac167e0279334dea5f9 |
| Linux/Linuxgeneric | 5.7 | Not reported |
| Linux/Linuxgeneric | >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <c6b56b8d549a043b6c8ff616db8748263eae05ae || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <1e7fb6801d9cc826adcdb7fa0533c397730657f2 || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <43559058d21e0493aa220ac167e0279334dea5f9 | c6b56b8d549a043b6c8ff616db8748263eae05ae, 1e7fb6801d9cc826adcdb7fa0533c397730657f2, 43559058d21e0493aa220ac167e0279334dea5f9 |
| Linux/Linuxgeneric | >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <9cbf6da967ec8c6e8278b70353b712980a12d848 || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <04d1930072e694d9d03bfefdb7e1ebdc872a3d0c || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <c6b56b8d549a043b6c8ff616db8748263eae05ae || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <1e7fb6801d9cc826adcdb7fa0533c397730657f2 || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <43559058d21e0493aa220ac167e0279334dea5f9 | 9cbf6da967ec8c6e8278b70353b712980a12d848, 04d1930072e694d9d03bfefdb7e1ebdc872a3d0c, c6b56b8d549a043b6c8ff616db8748263eae05ae, 1e7fb6801d9cc826adcdb7fa0533c397730657f2, 43559058d21e0493aa220ac167e0279334dea5f9 |
| Linux/Linuxgeneric | >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <109bf28a90ac365ec4d25622c50959bb43b35ed4 || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <9cbf6da967ec8c6e8278b70353b712980a12d848 || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <04d1930072e694d9d03bfefdb7e1ebdc872a3d0c || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <c6b56b8d549a043b6c8ff616db8748263eae05ae || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <1e7fb6801d9cc826adcdb7fa0533c397730657f2 || >=65038428b2c6c5be79d3f78a6b79c0cdc3a58a41 <43559058d21e0493aa220ac167e0279334dea5f9 | 109bf28a90ac365ec4d25622c50959bb43b35ed4, 9cbf6da967ec8c6e8278b70353b712980a12d848, 04d1930072e694d9d03bfefdb7e1ebdc872a3d0c, c6b56b8d549a043b6c8ff616db8748263eae05ae, 1e7fb6801d9cc826adcdb7fa0533c397730657f2, 43559058d21e0493aa220ac167e0279334dea5f9 |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: skip double clone set expressions on element insert Both the dynset and newsetelem path clone the existing set expressions when setting set element expressions if no override expressions are provided. This results in a double clone, once to clone the template set expressions then another clone on the new element. Add a flag to annotate if userspace provides a override expression (ie. expression of the same type of the set but different configuration), otherwise borrow the existing expression from the set. Add conditionals to release expression iif they represent an override. Use this new override_exprs flag to dump the dynset expression override to userspace. This simplifies the existing logic and it also fixes a bug with the connlimit expression which results in a module refcount imbalance WARNING splat when resorting on the default set expressions.
Quoted source text, attributed separately from HOL analysis.