CVE-2024-4693

Publication date 14 May 2024

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	24.10 oracular	Fixed 1:9.0.2+ds-4ubuntu5.1
	24.04 LTS noble	Fixed 1:8.2.2+ds-0ubuntu1.4
	23.10 mantic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

mdeslaur

per Debian, introduced in 8.0.0-rc0 with the following commit: https://gitlab.com/qemu-project/qemu/-/commit/f9a09ca3ea69d108d828b7c82f1bd61b2df6fc96 original fix was incomplete, see bugs

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
qemu	Upstream: fcbb086 Upstream: a8e63ff

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H