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  4. CVE 2023 5088 qemu improper ide controller reset can lead to
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Back to active CVEs
Medium · CVSS 6.4CVE-2023-5088

Qemu: improper ide controller reset can lead to mbr overwriteCVE-2023-5088

Answer in brief

CVE-2023-5088 records a Medium severity (CVSS 6.4) vulnerability in Qemu: improper ide controller reset can lead to mbr overwrite. The current sources do not mark it as known exploited. The current feed maps Red Hat/virt:av/qemu-kvm (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 3, 2023Updated Nov 7, 2026Source checked Nov 7, 2026First seen by HOL Nov 7, 2026Material review Nov 7, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-821
Source
CVE List V5
Source checked
Nov 7, 2026
References
8 linked sources
Open source record

Key facts

Risk
Medium · CVSS 6.4
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/virt:av/qemu-kvm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/virt:av/qemu-kvmgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/virt:av/qemu-kvm.
  2. 2Review the reported fix. Source-reported workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Evidence timeline and material changes

  1. Published upstream

    Nov 3, 2023

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 7, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 7, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
  • Source referencelists.debian.org
  • Source referencelists.debian.org
  • Source referencelore.kernel.org
  • Source referencesecurity.netapp.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.