What is CVE-2026-90364?

CVE-2026-90364 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 6.3 onward and patched in 6.6.157, 6.12.110, 6.18.52 and others. CVE-2026-90364 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-90364?

CVE-2026-90364 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-90364?

Yes, CVE-2026-90364 has been patched. Fixed versions include 6.6.157, 6.12.110, 6.18.52 and others. If you are running Linux kernel 6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-90364 actively exploited?

CVE-2026-90364 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-90364

In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: Unregister cpufreq notifier on init failure acpi_processor_driver_init() registers the cpufreq policy notifier before registering the ACPI processor driver and setting up CPU hotplug state. If driver_register() or cpuhp_setup_state() fails, the error path only unregisters the ACPI processor driver and the idle driver. The cpufreq notifier remains registered even though initialization failed. Mirror the module exit path on the init failure path and unregister the cpufreq notifier when it has been registered.

Package Linux Kernel

Published 2026-09-17

Last modified 2026-09-17

Patch available

Yes

Affected versions

Linux kernel versions 6.3 and later are affected. Fixed in 6.6.157, 6.12.110, 6.18.52, 7.2.6, 7.3-rc1 and their respective stable series.

Affected from

≥ 6.3

Fixed in

✓ 6.6.157 6.6.x ✓ 6.12.110 6.12.x ✓ 6.18.52 6.18.x ✓ 7.2.6 7.2.x ✓ 7.3-rc1

References

5 total

Frequently asked questions

What is CVE-2026-90364?

CVE-2026-90364 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.3 onward and has been patched in 6.6.157, 6.12.110, 6.18.52 and others. CVE-2026-90364 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-90364?

Yes. CVE-2026-90364 has been patched. Fixed versions include 6.6.157, 6.12.110, 6.18.52 and others. If you are running Linux kernel 6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-90364 actively exploited?

No. CVE-2026-90364 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.