CVE-2026-101310

Multiple vulnerabilities in bhyve device models

Published Oct 15, 2026 CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Description
The HDA audio device model did not check for zero-length Buffer Descriptor List (BDL) entries when starting a stream. A zero-length entry caused an out-of-bounds read or write during DMA transfer processing. BDL fields were also subject to modification by the guest after validation.

A malicious guest can crash the bhyve process or potentially execute arbitrary code in the host userspace context running the virtual machine, subject to bhyve's Capsicum sandbox.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Freebsd
Freebsd freebsd
Vendors & Products Freebsd
Freebsd freebsd
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Description The HDA audio device model did not check for zero-length Buffer Descriptor List (BDL) entries when starting a stream. A zero-length entry caused an out-of-bounds read or write during DMA transfer processing. BDL fields were also subject to modification by the guest after validation. A malicious guest can crash the bhyve process or potentially execute arbitrary code in the host userspace context running the virtual machine, subject to bhyve's Capsicum sandbox.
Title Multiple vulnerabilities in bhyve device models
Weaknesses CWE-126
CWE-362
CWE-787
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
freebsd
Published
Updated
Oct 16, 2026, 3:56 AM
Reserved
Sep 28, 2026, 1:33 PM
Status
Awaiting Analysis
Published
Oct 15, 2026, 8:16 AM
Modified
Oct 16, 2026, 4:18 AM