CVE-2026-64512

A flaw was found in the Linux kernel's Advanced Configuration and Power Interface ACPI Collaborative Processor Performance Control CPPC module. A field misuse related to register access width can lead to a "shift-out-of-bounds" error. This undefined behavior could potentially cause system...

UBUNTU-CVE-2026-64512

In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Suppress UBSAN warning caused by field misuse The definition of reg-accesswidth changes depending on the reg-spaceid type. Type ACPIADRSPACEPLATFORMCOMM uses accesswidth to indicate the PCC region, which can result in...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Avoid out-of-bounds access when parsing CPC data If the NumEntries field in the CPC return packet is less than 2, do not attempt to access the “Revision” element of that packet, because it may not be present at that...

ACPI: CPPC: Fix NULL pointer dereference when nosmp is used

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Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Makes rmwlock a rawspinlock. The following bug was triggered: ============================= Bug: Invalid wait context 6.12.0-rc2-XXX 406 Not tainted ----------------------------- kworker/1:1/62 is trying to lock:...

kernel: ACPI: CPPC: Use access_width over bit_width for system memory accesses

A vulnerability was found in the ACPI subsystem's CPPC driver in the Linux kernel. This issue occurs due to the mishandling of memory access bit width during performance capability calculations, which can lead to misaligned memory accesses and cause kernel panics on affected platforms...

PT-2025-13292

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved. The issue is related to the cpufreq component, specifically the CPPC Collaborative Processor Performance Control mechanism. The...