CVE-2024-56611

Summary

CVE-2024-56611 is a vulnerability affecting the Linux kernel that stems from an incorrect assumption regarding the presence of VMAs (Virtual Memory Areas) in a Memory Management (MM) context. This assumption results in a null pointer dereference issue, which can lead to a general protection fault. Upon migration of pages, the function 'migrate_to_node' might encounter a NULL return value from 'find_vma', leading to the dereference of null pointers. To address this flaw, proper handling of 'find_vma' returning NULL is required. This vulnerability, reported in Syzkaller, can potentially cause a system crash with severe consequences.

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