CVE-2026-64512: ACPI: CPPC: Suppress UBSAN warning caused by field misuse
Published Jul 25, 2026
·Updated
ACPI: CPPC: Suppress UBSAN warning caused by field misuse
Affected Software
2 affected componentsFixes available
Linux Linux kernel
Microsoft azl3 kernel 6.6.144.1-1<6.6.145.2-1
6.6.145.2-1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.145.2-1
Event History
Jul 25, 2026
CVE Published
via MITRE·08:52 AM
Data Sourced
via MITRE·08:52 AM
Description
Data Sourced
via NVD·10:17 AM
Description
Jul 26, 2026
Data Sourced
via Microsoft·08:09 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·08:09 AM
Affected Software
Updated
via Microsoft·08:09 AM
DescriptionSeverity
Frequently Asked Questions
1
What is the severity of CVE-2026-64512?
CVE-2026-64512 has a risk score of 11, indicating a critical vulnerability in the Linux kernel.
2
What does CVE-2026-64512 affect?
CVE-2026-64512 affects the Linux kernel specifically related to ACPI: CPPC functionality.
3
How do I fix CVE-2026-64512?
To fix CVE-2026-64512, update your Linux kernel to the latest patched version that addresses this vulnerability.
4
Is CVE-2026-64512 mitigated in any releases?
Yes, CVE-2026-64512 has been resolved in the latest kernel releases referenced in the official patch.
5
What impact does CVE-2026-64512 have on system security?
CVE-2026-64512 can lead to potential misuse of access_width in ACPI features, which can compromise system stability and security.