CVE-2026-53328

kernel: sched_ext: Don't warn on NULL cgrp_moving_from in scx_cgroup_move_task()

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · July 1, 2026

Updated · July 2, 2026

Description

A flaw was found in the Linux kernel's sched_ext component. When systemd's user manager interacts with subtree_control while sched_ext is loaded, a warning can be triggered. This occurs due to a mismatch in how cgroup and css identities are handled during task migration, potentially leading to system instability or a local denial of service.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-476 · NULL Pointer Dereference