CVE-2026-43084

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A slab-use-after-free issue exists in the netfilter nfnetlink queue component. The problem occurs because a global hash table is shared among all queues, which can lead to a system crash. Specifically, a nf queue entry structure is freed using kfree(), but a parallel CPU may still encounter that same nf queue entry while walking the list. This flaw was identified in the nfqnl recv verdict() function.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.