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.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FreeBSD | FreeBSD | unknown |
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Tracking
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Thu, 15 Oct 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The xHCI (USB 3) device model did not validate or save the event ring size provided by the guest. The size was re-read from guest memory on each use, and Transfer Request Block (TRB) fields were loaded without protection against concurrent modification by the guest. This race condition could be triggered by a guest running malicious, privileged code. 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-362 | |
| References |
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: freebsd
Published:
Updated: 2026-10-15T15:47:58.877Z
Reserved: 2026-09-28T13:33:02.324Z
Link: CVE-2026-101309
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-15T08:16:36.197
Modified: 2026-10-15T08:16:36.197
Link: CVE-2026-101309
Redhat
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OpenCVE Enrichment
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CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')