CVE-2026-101310
highpriority · track · 0EPSS 0.001 · 2 %ileDENLEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.4–7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (5)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- NCSC-2026-0452Kwetsbaarheden verholpen in FreeBSD bhyve hypervisorNL2026-10-22csaf · ncsc_nlNL
De FreeBSD community heeft meerdere kwetsbaarheden verholpen in bhyve Hypervisor
- WID-SEC-W-2026-3967FreeBSD Project FreeBSD OS: Mehrere SchwachstellenDeutsch2026-10-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in FreeBSD Project FreeBSD OS ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen und um Sicherheitsvorkehrungen zu umgehen.
sources
Which sources assert this record, and when.
references (1) nvd
External citations — patches, advisories, analysis.
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