Skip to content
Fencer Vulns
medium 5.3

CVE-2024-26327 json

An issue was discovered in QEMU 7.1.0 through 8.2.1.

published 2024-02-19 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-23596

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

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 implementations.

Patch / fix

  • qemu Debian 12 1:7.2+dfsg-7+deb12u6
  • qemu Debian 14, Debian 13 1:8.2.3+ds-1

debian advisories DEBIAN-CVE-2024-26327

  • qemu Ubuntu 24.04 LTS 1:8.2.2+ds-0ubuntu1.2

ubuntu advisories UBUNTU-CVE-2024-26327

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • qemu-kvm RHEL 9 17:9.0.0-10.el9_5
  • qemu-img RHEL 9 17:9.0.0-10.el9_5
  • qemu-kvm-core RHEL 9 17:9.0.0-10.el9_5
  • qemu-kvm-tools RHEL 9 17:9.0.0-10.el9_5
  • qemu-pr-helper RHEL 9 17:9.0.0-10.el9_5
  • qemu-kvm-common RHEL 9 17:9.0.0-10.el9_5
  • qemu-guest-agent RHEL 9 17:9.0.0-10.el9_5
  • qemu-kvm-audio-pa RHEL 9 17:9.0.0-10.el9_5

red hat advisories RHSA-2024:9136

  • qemu SLE Module for Server Applications 15 SP5, SLE Module for Package Hub 15 SP5, SLE Module for Basesystem 15 SP5 +2 more 7.1.0-150500.49.12.1

suse advisories SUSE-SU-2024:1103-1

  • qemu-kvm AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-img AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-kvm-core AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-kvm-tools AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-pr-helper AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-kvm-common AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-guest-agent AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-kvm-audio-pa AlmaLinux 9 17:9.0.0-10.el9_5

almalinux advisories ALSA-2024:9136

  • qemu-kvm Rocky Linux 9 7:9.0.0-10.el9_5.2

rocky linux advisories RLSA-2024:9136

  • qemu Azure Linux 3.0 8.2.0-16

azure linux advisories AZL-61716

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-26327 updated cvss 5.5

qemu-kvm: pcie: improper validation of NumVFs leads to buffer overflow

  • Red Hat Enterprise Linux AppStream (v. 9) qemu-img 9.0.0-10.el9_5, qemu-kvm 9.0.0-10.el9_5, qemu-kvm-core 9.0.0-10.el9_5, qemu-kvm-tools 9.0.0-10.el9_5, qemu-pr-helper 9.0.0-10.el9_5, qemu-kvm-common 9.0.0-10.el9_5, +13 more
    fixed: vendor fix RHSA-2024:9136
  • Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32 Red Hat Enterprise Linux 7 qemu-img, qemu-kvm, libcacard, qemu-img-ma, qemu-kvm-ma, qemu-kvm-tools, +5 more Red Hat Enterprise Linux 8 qemu-img, qemu-kvm, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, qemu-guest-agent, +8 more Red Hat Enterprise Linux 8 Advanced Virtualization qemu-img, qemu-kvm, qemu-kiwi, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, +9 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.3 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 5.3 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • qemu qemu

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.