Medium
Qemu: improper ide controller reset can lead to mbr overwrite
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2023-5088
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 12:27 UTC · Revision 1
Source evidence
Qemu: improper ide controller reset can lead to mbr overwrite
core-osv · Original sourcePublished 3 Nov 2023, 13:58 UTC
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.
osv:CVE-2023-5088
Complete source record
{
"id": "a25a28d7a49b6e521aaf65ceaa85fd4de48050497f03dd189cc66d924068b153",
"url": "https://osv.dev/vulnerability/CVE-2023-5088",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Qemu: improper ide controller reset can lead to mbr overwrite",
"summary": "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.",
"evidence": "osv:CVE-2023-5088",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2023-5088",
"aliases": [
"CVE-2023-5088"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
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},
{
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}
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],
"modified": "2026-10-28T02:30:28.437121619Z",
"provider": "osv",
"references": [
"https://access.redhat.com/downloads/content/package-browser/",
"https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html",
"https://lists.debian.org/debian-lts-announce/2025/04/msg00042.html",
"https://lore.kernel.org/all/20230921160712.99521-1-simon.rowe@nutanix.com/T/",
"https://access.redhat.com/errata/RHSA-2024:2135",
"https://access.redhat.com/errata/RHSA-2024:2962",
"https://access.redhat.com/security/cve/CVE-2023-5088",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5088.json",
"https://nvd.nist.gov/vuln/detail/CVE-2023-5088",
"https://security.netapp.com/advisory/ntap-20231208-0005/",
"https://bugzilla.redhat.com/show_bug.cgi?id=2247283"
],
"provider_metadata": {
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],
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{
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{
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{
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}
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}
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}
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"value": "CVE-2023-5088",
"evidence": "/id"
}
],
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"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 495364,
"published_at": "2023-11-03T13:58:50.085+00:00"
}