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 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.
References (8)
Scores
CVSS v3
6.4
EPSS
0.0001
EPSS Percentile
2.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-821
CWE-662
Status
published
Products (3)
qemu/qemu
< 8.2.0
redhat/enterprise_linux
8.0 (2 CPE variants)
redhat/enterprise_linux
9.0
Published
Nov 03, 2023
Tracked Since
Feb 18, 2026