CVE-2026-72010

A flaw was found in the Linux kernel's cgroup/cpuset component. A local user can exploit this by configuring a child cpuset without explicitly setting its memory nodes. When a CPU hotplug event occurs, a division-by-zero error is triggered during memory policy rebind, leading to a system crash. This vulnerability results in a Denial of Service (DoS).

This vulnerability is rated as having Low impact for Red Hat Enterprise Linux because exploitation requires a rare combination of custom cgroup cpuset hierarchies, relative node memory policies, and privileged CPU hotplug operations. Under typical system configurations, standard unprivileged users lack the authorization to trigger CPU hotplug events through sysfs or virtual machine controls. As a result, the risk of an unprivileged local denial of service crash is minimal in production environments.

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.