CVE-2023-5088: Qemu

High severity, CVSS 7.0. EPSS: 0.2% chance of exploitation in the next 30 days.

A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.

Affected products

• Qemu Qemu: before 8.2.0 (fixed in 8.2.0)
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only

Published 2023-11-03. Last modified 2026-06-17.