CVE-2026-90061
What it is
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.
At a glance
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: not scored yet.
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Record status
- Received
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-90061.md and follow it. Check whether this project is affected by CVE-2026-90061. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
References
- https://git.kernel.org/stable/c/04d1930072e694d9d03bfefdb7e1ebdc872a3d0c
- https://git.kernel.org/stable/c/109bf28a90ac365ec4d25622c50959bb43b35ed4
- https://git.kernel.org/stable/c/1e7fb6801d9cc826adcdb7fa0533c397730657f2
- https://git.kernel.org/stable/c/43559058d21e0493aa220ac167e0279334dea5f9
- https://git.kernel.org/stable/c/9cbf6da967ec8c6e8278b70353b712980a12d848
- https://git.kernel.org/stable/c/c6b56b8d549a043b6c8ff616db8748263eae05ae