CVE-2026-101310
High
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.
SeverityHigh
CVSS7.0
Exploit probability—
Product
FreeBSD
PublishedOct 15, 2026
First seenOct 15, 2026
How to fix
Update
- FreeBSD FreeBSDp5, p2, p11 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| FreeBSD FreeBSD | 15.1-RELEASE ≤ v < p5, 14.5-RELEASE ≤ v < p2, 14.4-RELEASE ≤ v < p11 | p5, p2, p11 |
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