Denial of service in QEMU Virtio PCI Bindings

1) Operation on a Resource after Expiration or Release

EUVDB-ID: #VU94528

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-4693

CWE-ID: CWE-672 - Operation on a Resource after Expiration or Release

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to an improper release and use of the irqfd for vector 0 during the boot process in the QEMU Virtio PCI Bindings (hw/virtio/virtio-pci.c). A malicious guest can crash the QUEMU host process via vhost_net_stop().

Mitigation

Install updates from vendor's website.

Vulnerable software versions

QEMU: All versions

External links

http://access.redhat.com/security/cve/CVE-2024-4693
http://bugzilla.redhat.com/show_bug.cgi?id=2279965

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.