page_table_walk

Capture the Flag in Physical Memory You've read about paging. The diagrams make sense. Four levels, 9 bits each, page frame, offset. Sure. But then you hit a challenge that requires actually walking page tables, and you realize you don't know it. You know about it. Big difference. What worked for...

CVE-2026-46325

Summary (details from sources): CVE-2026-46325 affects the Linux kernel RDMA/rxe code, where iova-to-va conversion fails when MR page_size differs from system PAGE_SIZE. The bug arises because rxe_set_page() uses mr->page_size steps while the page_list holds PAGE_SIZE pages, and ib_sg_to_page(...

CVE-2026-46325

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGESIZE The current implementation incorrectly handles memory regions MRs with page sizes different from the system PAGESIZE. The core issue is that rxesetpage is called...

Researchers Defeat AMD's SEV Virtual Machine Encryption

German security researchers claim to have found a new practical attack against virtual machines VMs protected using AMD's Secure Encrypted Virtualization SEV technology that could allow attackers to recover plaintext memory data from guest VMs. AMD's Secure Encrypted Virtualization SEV technology...