CVE-2026-27211 Cloud Hypervisor: Host File Exfiltration via QCOW Backing File Abuse

Cloud Hypervisor is a Virtual Machine Monitor for Cloud workloads. Versions 34.0 through 50.0 arevulnerable to arbitrary host file exfiltration constrained by process privileges when using virtio-block devices backed by raw images. A malicious guest can overwrite its disk header with a crafted...

Qemu: qcow1: validate L2 table size to avoid integer overflows

An integer overflow flaw was found in the QEMU block driver for QCOW version 1 disk images. A user able to alter the QEMU disk image files loaded by a guest could use this flaw to corrupt QEMU process memory on the host, which could potentially result in arbitrary code execution on the host with...