Memory Management Flaw in Linux Kernel Affecting PTE Markers

CVE-2022-49744

What is CVE-2022-49744?

A memory management vulnerability in the Linux kernel has been identified, particularly affecting the handling of Page Table Entry (PTE) markers during the fork() operation. The issue arises when the destination virtual memory area (dst_vma) may not properly inherit PTE markers from the source virtual memory area (src_vma), leading to the potential reading of corrupted pages by child processes. The flaw primarily revolves around ensuring the persistence of swapin error markers post-fork, as improper management could allow for unintentional data corruption, undermining system integrity.

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