CVE-2026-101310
The HDA audio device model did not check for zero-length Buffer Descriptor List (BDL) entries when…
- Risk score
- 42/100
- CVSS
- 7.0 v3.1
- Exploit chance (30 days)
- 0.1%
- Published
- 15 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 bhy…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.0 high
References
Original 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.
Last activity 15 Oct 2026. Patch Forecast updates every hour.