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.
oryginał ENCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:HQemu
APPQemu< 8.2.0Red Hat Enterprise Linux
OSRedhat8.09.0
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