tag
Virtualization
Zapscape — KVM/x86 Shadow-MMU Recursive-Zap Guest-to-Host Escape (CVE-2026-64561)
Zapscape (CVE-2026-64561) is a use-after-free in the KVM/x86 shadow MMU that lets a guest which uses nested virtualization escape to the host and run commands as the host kernel (root). Using guest-side actions alone, an attacker makes KVM recursively zap a…
ITScape — KVM/arm64 vGIC-ITS Guest-to-Host VM Escape (CVE-2026-46316)
ITScape (CVE-2026-46316) is a use-after-free in the KVM/arm64 in-kernel vGIC-ITS (Interrupt Translation Service) emulation that lets an unprivileged-but-rooted guest VM escape to the host and execute code as the host kernel (i.e., as root on the host), on any…
QEMU CXL Type-3 Mailbox Guest-to-Host Escape
QEMU's CXL Type-3 mailbox command handling contains two related out-of-bounds issues: the GETLOG handler validates offset + length as a byte range but then uses offset as an array index into cci->cellog, and the SETFEATURE rank-sparing handler copies…
Linux vsock Use-After-Free VM Escape (CVE-2025-21756)
CVE-2025-21756 is a use-after-free vulnerability in the Linux kernel's vsock (virtual socket) subsystem. An attacker with code execution inside a virtual machine can exploit this bug to escape the VM boundary and gain root-level code execution on the…