The framebuffer device model's maximum resolution constants were duplicated between the framebuffer and RFB modules and had gotten out of sync.

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• vendor FreeBSD FreeBSDversion unspecified

How to fix CVE-2026-101311

• Recommended remediation

  A patch or advisory reference is linked. Open the original publisher for availability by product version.

• Official advisories

  • CIRCL Vulnerability Lookup · vulnerability.circl.lu
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • FreeBSD Security · freebsd.org
  • NIST NVD · nvd.nist.gov

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Oct 15, 2026 · NIST NVD

   Detected

   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 ar

2. Oct 15, 2026 · NIST NVD

   Updated

   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 ar

3. Oct 15, 2026 · NIST NVD

   Updated

   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 ar

4. Oct 16, 2026 · NIST NVD

   Updated

   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 ar

Sources

• CIRCL Vulnerability LookupVulnerability recordCVE-2026-101311

  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

  vulnerability.circl.lu
• CVE.orgVulnerability recordCVE-2026-101311

  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

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-101311

  30-day exploitation probability 0.1%

  first.org
• FreeBSD SecurityVendor advisoryCVE-2026-101311

  CVE-2026-101311 is named by FreeBSD Security.

  freebsd.org
• NIST NVDVulnerability recordCVE-2026-101311

  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

  nvd.nist.gov

References

• Reference · security.freebsd.org

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.