Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Use accesswidth instead of bitwidth for system memory accesses To comply with ACPI 6.3+, since bitwidth can be any 8-bit value, it cannot be relied upon to always be at a clean 8-bit boundary. This issue was discovere...

SUSE 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...

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...

CVE-2026-64512

In CVE-2026-64512, a Linux kernel issue in the ACPI CPPC module stems from field misuse of reg->access_width depending on reg->space_id. When using ACPI_ADR_SPACE_PLATFORM_COMM, access_width indicates the PCC region and can trigger UBSAN shift-out-of-bounds, as illustrated by UBSAN: shift-o...

EUVD-2026-48856

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...

CVE-2026-64512 ACPI: CPPC: Suppress UBSAN warning caused by field misuse

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...

PT-2026-64733

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.0.10-201.fc44.aarch64 Description An issue exists in the ACPI CPPC component where the definition of reg-access width varies based on the reg-space id type. When the type is ACPI ADR SPACE PLATFORM COMM, access...

Linux Distros Unpatched Vulnerability : CVE-2026-64512

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ACPI: CPPC: Suppress UBSAN warning caused by field misuse The definition of reg-accesswidth changes depending on the reg-spaceid type. Type...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007627)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007627 advisory. In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Use accesswidth over bitwidth for system memory accesses To align with ACPI 6.3+, sin...

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

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DEBIAN-CVE-2024-35995

In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Use accesswidth over bitwidth for system memory accesses To align with ACPI 6.3+, since bitwidth can be any 8-bit value, it cannot be depended on to be always on a clean 8b boundary. This was uncovered on the Cobalt 1...

CVE-2024-35995 ACPI: CPPC: Use access_width over bit_width for system memory accesses

In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Use accesswidth over bitwidth for system memory accesses To align with ACPI 6.3+, since bitwidth can be any 8-bit value, it cannot be depended on to be always on a clean 8b boundary. This was uncovered on the Cobalt 1...

CVE-2024-35995

CVE-2024-35995 describes a Linux kernel issue where the ACPI CPPC code misread system memory by relying on bit_width, risking incorrect memory access. The fix switches to using access_width for size calculation and reads/writes using an offset and width, with a fallback to bit_width if access_wid...

PT-2024-26832

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.6.37 Description The issue is related to the ACPI CPPC Collaborative Processor Performance Control in the Linux kernel, where using bit width for system memory accesses could lead to issues since it can be any...