CVE-2026-46154

A flaw was found in the Linux kernel, specifically within the `sched_ext` component. This vulnerability, a use-after-free, occurs in the cgroup setters when the `scx_root` pointer is cached before a required lock is acquired. This can lead to a stale pointer if a scheduler is disabled and then re-enabled, allowing a local attacker to potentially cause a denial of service or achieve privilege escalation.