BaseFortify

Publication date: 2025-10-16

Last updated on: 2025-10-21

Assigner: MITRE

Description

A divide-by-zero in VirtIO network device emulation in BitVisor from commit 108df6 (2020-05-20) to commit 480907 (2025-07-06) allows local attackers to cause a denial of service (host hypervisor crash) via a crafted PCI configuration space access.

CVSS Scores

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Meta Information

Published

2025-10-16

Last Modified

2025-10-21

Generated

2026-07-06

AI Q&A

2025-10-16

EPSS Evaluated

2026-07-05

NVD

CVE-2025-61554

Affected Vendors & Products

Vendor	Product	Version / Range
bitvisor	bitvisor	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-369	The product divides a value by zero.

Attack-Flow Graph

Executive Summary

This vulnerability is a divide-by-zero error in the VirtIO network device emulation within BitVisor. It occurs in versions from commit 108df6 (2020-05-20) to commit 480907 (2025-07-06). A local attacker can exploit this by crafting a specific PCI configuration space access, which triggers the divide-by-zero and causes the host hypervisor to crash.

Impact Analysis

The vulnerability can cause a denial of service by crashing the host hypervisor. This means that an attacker with local access could disrupt the operation of the virtualized environment, potentially leading to downtime or loss of availability of services running on the hypervisor.

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