Multiple vulnerabilities in bhyve device models
The framebuffer device model's maximum resolution constants were duplicated between the framebuffer and RFB modules and had gotten out of sync. Additionally, writes to the framebuffer BAR could set arbitrary width and height values without validation, and the framebuffer BAR I/O and RFB rendering threads were not synchronized. 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.
CVE-2026-101311
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-101311
FreeBSD
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "FreeBSD",
"modules": [
"bhyve"
],
"product": "FreeBSD",
"versions": [
{
"status": "affected",
"version": "15.1-RELEASE",
"lessThan": "p5",
"versionType": "release"
},
{
"status": "affected",
"version": "14.5-RELEASE",
"lessThan": "p2",
"versionType": "release"
},
{
"status": "affected",
"version": "14.4-RELEASE",
"lessThan": "p11",
"versionType": "release"
}
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-101311
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #32306 · Revision 1
- Added to Heist Feed
- Publisher date