Propagation Defects in the Linux Kernel: A Deep Dive Analysis of CVE-2026-43503 (DirtyClone)
Introduction At the heart of modern operating systems, the Linux kernel relies heavily on advanced optimization techniques to maintain exceptional performance and throughput during memory management and network operations. One of the most fundamental of these architectural safeguards is the Copy-on-Write (COW) mechanism, which allows multiple unprivileged processes to share the exact same physical memory pages safely until an explicit