CVE Database›Document archive›CVE-2026-98163

CVE-2026-98163

kernel: cgroup: Avoid iteration of dying tasks with zero refcount

Loading…

Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 26, 2026

Updated · October 7, 2026

Description

A flaw was found in the Linux kernel's control group (cgroup) subsystem. A local user can cause a Denial of Service (DoS) or potentially achieve privilege escalation by triggering a race condition when reading cgroup process listings while tasks are terminating. Due to improper handling of dying tasks during iteration, the kernel can reference an object whose usage counter has reached zero, resulting in a use-after-free memory flaw.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-366 · Race Condition within a Thread