synced 14 MIN AGO
01 Record

CVE-2023-42467

QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.41% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 35.5% of scored records. A rank, not a probability.
NVD base score
5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-09-11 00:00Z3 YR AGO
Last updated
2024-09-26 17:36Z2 YR AGO
Reserved
2023-09-11
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
9efbed5490b12b3caebf6878a16f156a56c36790e2a53df5db38cdb770e7667c

05 Affected products

VendorProductVersionsPlatforms
qemuqemuNot specified—
redhatadvanced_virtualizationNot specified—
redhatenterprise_linuxNot specified—

06 References

07 Fixed in

AlmaLinux 9

  • qemu-guest-agent
    Fixed in 17:8.2.0-11.el9_4
  • qemu-img
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-audio-pa
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-block-blkio
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-block-curl
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-block-rbd
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-common
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-core
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-display-virtio-gpu
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-display-virtio-gpu-ccw
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-display-virtio-gpu-pci
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-display-virtio-vga
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-usb-host
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-usb-redirect
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-docs
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-tools
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-ui-egl-headless
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-ui-opengl
    Fixed in 17:8.2.0-11.el9_4
  • qemu-pr-helper
    Fixed in 17:8.2.0-11.el9_4

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • qemu-guest-agent
    Fixed in 17:8.2.0-11.el9_4
  • qemu-img
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-audio-pa
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-block-blkio
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-block-curl
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-block-rbd
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-common
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-core
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-display-virtio-gpu
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-display-virtio-gpu-ccw
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-display-virtio-gpu-pci
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-display-virtio-vga
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-usb-host
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-device-usb-redirect
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-docs
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-tools
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-ui-egl-headless
    Fixed in 17:8.2.0-11.el9_4
  • qemu-kvm-ui-opengl
    Fixed in 17:8.2.0-11.el9_4
  • qemu-pr-helper
    Fixed in 17:8.2.0-11.el9_4

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • qemu
    Fixed in 1:7.2+dfsg-7+deb12u3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • qemu
    Fixed in 1:8.1.1+ds-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • qemu
    Fixed in 1:8.1.1+ds-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.