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.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.1 | 6.4 | Medium | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
| Product | Vendor | Version |
|---|---|---|
| Red Hat Enterprise Linux 6 | Red Hat | Snapdragon 8 Gen 1 Mobile Platform |
| Red Hat Enterprise Linux 9 | Red Hat | 720 |
| Red Hat Enterprise Linux 7 | Red Hat | n/a |
| Red Hat Enterprise Linux 7 | Red Hat | <= 2.6.8 |
| Red Hat Enterprise Linux 8 Advanced Virtualization | Red Hat | < 4.12 |
| Red Hat Enterprise Linux 8 | Red Hat | < unspecified |
| Red Hat Enterprise Linux 8 | Red Hat | Snapdragon 780G 5G Mobile Platform |