Memory Management Vulnerability in Linux Kernel Affecting Multiple Systems

CVE-2025-71134

What is CVE-2025-71134?

A critical issue has been identified within the Linux kernel's memory management system related to the handling of page coalescing. When a page is freed, it is intended to merge with its buddy into a higher order page. However, if the buddy page's migrate type differs from that of the freed page, only the first pageblock is updated. This inconsistency can lead to subsequent warnings during operations that require accurate migration types, potentially leading to instability and unexpected behavior in system performance.

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