#VU101964 Resource management error in QEMU - CVE-2024-26328

Vulnerability identifier: #VU101964

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-26328

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description

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

The vulnerability exists due to improper management of internal resources within the application. The register_vfs() function in hw/pci/pcie_sriov.c does not set NumVFs to PCI_SRIOV_TOTAL_VF. A malicious guest can perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

QEMU: 7.1.0 - 8.2.1

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External links
https://lore.kernel.org/all/20240213055345-mutt-send-email-mst%40kernel.org/
https://security.netapp.com/advisory/ntap-20240419-0010/

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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