File-Backed Memory

DirtyClone — Linux Kernel LPE via Cloned Packet Page-Cache Overwrite (CVE-2026-43503)

DirtyClone (CVE-2026-43503, CVSS 8.8) is the fourth member of the DirtyFrag family of Linux kernel local privilege escalation vulnerabilities. Each member shares the same root failure: file-backed page-cache memory is exposed to network packet operations, and…