synced 15 MIN AGO
01 Record

CVE-2024-26327

An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c mishandles the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF

MediumPUBLISHEDCNA: mitre
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c mishandles the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total 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
0.59% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 48.2% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. 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
2024-02-19 00:00Z2 YR AGO
Last updated
2024-08-02 00:07Z2 YR AGO
Reserved
2024-02-19
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-122Heap-based Buffer OverflowVariant
  • CWE-787Out-of-bounds WriteBase
  • CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
Data version
5.1
Document digest
3b5523bd560e7165e591314670b221dc7334e11103851a1689e421f5f0fa4d2a

05 Affected products

VendorProductVersionsPlatforms
qemuqemu-—

06 References

07 Fixed in

AlmaLinux 9

  • qemu-guest-agent
    Fixed in 17:9.0.0-10.el9_5
  • qemu-img
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-audio-pa
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-block-blkio
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-block-curl
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-block-rbd
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-common
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-core
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-display-virtio-gpu
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-display-virtio-gpu-ccw
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-display-virtio-gpu-pci
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-display-virtio-vga
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-usb-host
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-usb-redirect
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-docs
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-tools
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-ui-egl-headless
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-ui-opengl
    Fixed in 17:9.0.0-10.el9_5
  • qemu-pr-helper
    Fixed in 17:9.0.0-10.el9_5

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 17:9.0.0-10.el9_5
  • qemu-img
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-audio-pa
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-block-blkio
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-block-curl
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-block-rbd
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-common
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-core
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-display-virtio-gpu
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-display-virtio-gpu-ccw
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-display-virtio-gpu-pci
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-display-virtio-vga
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-usb-host
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-device-usb-redirect
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-docs
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-tools
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-ui-egl-headless
    Fixed in 17:9.0.0-10.el9_5
  • qemu-kvm-ui-opengl
    Fixed in 17:9.0.0-10.el9_5
  • qemu-pr-helper
    Fixed in 17:9.0.0-10.el9_5

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+deb12u6

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

Debian 13

  • qemu
    Fixed in 1:8.2.3+ds-1

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

Debian 14

  • qemu
    Fixed in 1:8.2.3+ds-1

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

Ubuntu 24.04 LTS

  • qemu
    Fixed in 1:8.2.2+ds-0ubuntu1.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. 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.