CVE-2023-5088
Qemu: improper ide controller reset can lead to mbr overwrite
- State
- Published
- Severity
- 6.4 Medium
- Published
- Nov 3, 2023
- Updated
- Feb 25, 2026
- Reserved
- Sep 20, 2023
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H | redhat |
Weaknesses
- CWE-821 Incorrect Synchronization
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 8Red Hat |
|
Red Hat Enterprise Linux 8Red Hat |
|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8 Advanced VirtualizationRed Hat |
References
- RHSA-2024:2135vendor-advisory
- RHSA-2024:2962vendor-advisory
- https://access.redhat.com/security/cve/CVE-2023-5088vdb-entry
- RHBZ#2247283issue-tracking
- https://lore.kernel.org/all/20230921160712.99521-1-simon.rowe@nutanix.com/T/
- https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20231208-0005/
- https://lists.debian.org/debian-lts-announce/2025/04/msg00042.html
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