Sceawere

Vulnerability Detail

CVE-2026-101309 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Severity
High
Score / CVSS
7
Creation Date
11h ago
Vendor
FreeBSD
Product
FreeBSD
Attack Type
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Vector String
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Complexity
HIGH

Narrative and Response

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.

Executive Summary

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Technical Details

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Mitigations

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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References

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Additional Metadata

{
  "score": "7.0",
  "pubDate": "2026-10-15T08:16:36.197Z",
  "pubdate": "2026-10-15T08:16:36.197Z"
}
CVE-2026-101309: CVE-2026-101309 Vulnerability (HIGH Severity, CVSS: 7.0) | Sceawere