Security Advisory

CVE-2023-5088

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-11-03 13:58:50

Last updated 2026-02-25 18:18:36

Assigner redhat

State PUBLISHED

Description

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 VMs 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.

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