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Fencer Vulns
medium 5.5

CVE-2024-4693 json

Qemu-kvm: virtio-pci: improper release of configure vector leads to guest triggerable crash

published 2024-05-10 2 y ago modified 2026-11-05 3 d ago also EUVD-2024-44292

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

Summary

A flaw was found in the QEMU Virtio PCI Bindings (hw/virtio/virtio-pci.c). An improper release and use of the irqfd for vector 0 during the boot process leads to a guest triggerable crash via vhost_net_stop(). This flaw allows a malicious guest to crash the QEMU process on the host.

Patch / fix

  • qemu Debian 14, Debian 13 1:8.2.3+ds-1

debian advisories DEBIAN-CVE-2024-4693

  • qemu Ubuntu 24.04 LTS 1:8.2.2+ds-0ubuntu1.4

ubuntu advisories UBUNTU-CVE-2024-4693

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 Linux Micro 6.0 8.2.7-1.1
  • qemu SLE Module for Server Applications 15 SP6, SLE Module for Package Hub 15 SP6, SLE Module for Basesystem 15 SP6 +1 more 8.2.7-150600.3.20.1
  • qemu-linux-user SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 8.2.7-150600.3.20.1
  • qemu SLE Module for Confidential Computing Technical Preview 15 SP6 8.2.7-15061.6.coco15sp6.1

suse advisories SUSE-SU-2025:20076-1SUSE-SU-2024:4094-1SUSE-SU-2024:3744-1

  • qemu Azure Linux 3.0 8.2.0-16

azure linux advisories AZL-60919

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-2024-4693 updated cvss 5.5

qemu-kvm: virtio-pci: improper release of configure vector leads to guest triggerable crash

  • 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 Advanced Virtualization qemu-img, qemu-kvm, qemu-kiwi, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, +9 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 qemu-img, qemu-kvm, qemu-kvm-core, qemu-kvm-tools, qemu-pr-helper, qemu-kvm-common, +16 more
    affected: no fix available
  • Red Hat Enterprise Linux 8 qemu-img, qemu-kvm, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, qemu-guest-agent, +8 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
partial
Assessed
2 y ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-672 Operation on a Resource after Expiration or Release

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.