Use-After-Free Vulnerability in Linux Kernel Affecting ACPI Components

CVE-2022-50423

What is CVE-2022-50423?

A use-after-free vulnerability has been identified within the Linux kernel's ACPI subsystem. This issue arises when the function acpi_ut_copy_ipackage_to_ipackage() fails, resulting in the premature release of the acpi_operand_object. As a consequence, multiple references may be released, leading to potential exploitation during the handling of internal package objects, specifically through the acpi_ut_remove_reference() function. This flaw exposes the kernel to risks associated with memory corruption, impacting system stability and security. The vulnerability has been addressed to ensure proper memory management and references handling to prevent such occurrences.

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