CVE-2026-64373
kernel: cpufreq: Fix hotplug-suspend race during reboot
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 25, 2026
Updated · September 9, 2026
Description
A flaw was found in the Linux kernel's CPU frequency scaling (cpufreq) subsystem. During a system reboot, a race condition can occur when the system attempts to suspend CPU frequency operations while CPU hotplug operations are still active. This can lead to a null pointer dereference, which may cause the system to crash, resulting in a denial of service.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference