CVE-2026-68337

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

Description An issue exists in the BPF subsystem where the bpf redirect*() helpers and skb do redirect() function obtain per-task bpf redirect info via bpf net ctx get ri(). This process unconditionally dereferences current->bpf net context. When {cls,act} bpf is attached to a proper qdisc, the context is not established, leading to a NULL dereference (a situation where the system attempts to read a memory address that is null, causing a crash). This can be triggered if a program calls bpf redirect() directly or returns a TC ACT REDIRECT verdict, which then dispatches to skb do redirect() via tcf qevent handle().

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